Refactor RapidsTestSettings imports to one suite per line (#13768)

## Description

Refactor the import statements in `RapidsTestSettings.scala` to improve
code readability and maintainability.

## Changes

- Split the single long import statement (containing 30 test suites)
into individual import lines
- Each `RapidsSuite` is now imported on a separate line

**Before:**
```scala
import org.apache.spark.sql.rapids.suites.{RapidsCastSuite, RapidsDataFrameAggregateSuite, RapidsJsonExpressionsSuite, ...}
```

**After:**
```scala
import org.apache.spark.sql.rapids.suites.RapidsCastSuite
import org.apache.spark.sql.rapids.suites.RapidsDataFrameAggregateSuite
import org.apache.spark.sql.rapids.suites.RapidsJsonExpressionsSuite
...
```

## Benefits

1. **Better Readability** - Each test suite is clearly visible on its
own line
2. **Cleaner Git Diffs** - When adding/removing test suites, only
affected lines change
3. **Easier Maintenance** - Reduces merge conflicts when multiple
branches add different suites
4. **Better Code Review** - Easier to spot which test suites are being
added or removed

## Style Compliance

- ✅ **No style violations** - Verified with `mvn verify`
- The existing `// scalastyle:off line.size.limit` comment handles line
length constraints
- All license checks pass (Apache RAT)

## Testing

```bash
mvn verify -pl tests -Dbuildver=330 -DskipTests
```

Result: **BUILD SUCCESS** - No compilation errors, no style violations

## Files Changed

-
`tests/src/test/spark330/scala/org/apache/spark/sql/rapids/utils/RapidsTestSettings.scala`

Signed-off-by: Allen Xu <[email protected]>

Signed-off-by: Allen Xu <[email protected]>

Author: wjxiz1992

tests/src/test/spark330/scala/org/apache/spark/sql/rapids/utils/RapidsTestSettings.scala

@@ -19,7 +19,38 @@
 spark-rapids-shim-json-lines ***/
 package org.apache.spark.sql.rapids.utils
 
-import org.apache.spark.sql.rapids.suites.{RapidsCastSuite, RapidsDataFrameAggregateSuite, RapidsJsonExpressionsSuite, RapidsJsonFunctionsSuite, RapidsJsonSuite, RapidsMathExpressionsSuite, RapidsMathFunctionsSuite, RapidsMiscFunctionsSuite, RapidsParquetAvroCompatibilitySuite, RapidsParquetColumnIndexSuite, RapidsParquetCompressionCodecPrecedenceSuite, RapidsParquetDeltaByteArrayEncodingSuite, RapidsParquetDeltaEncodingInteger, RapidsParquetDeltaEncodingLong, RapidsParquetDeltaLengthByteArrayEncodingSuite, RapidsParquetEncodingSuite, RapidsParquetFieldIdIOSuite, RapidsParquetFieldIdSchemaSuite, RapidsParquetFileFormatSuite, RapidsParquetInteroperabilitySuite, RapidsParquetPartitionDiscoverySuite, RapidsParquetProtobufCompatibilitySuite, RapidsParquetQuerySuite, RapidsParquetRebaseDatetimeSuite, RapidsParquetSchemaPruningSuite, RapidsParquetSchemaSuite, RapidsParquetThriftCompatibilitySuite, RapidsParquetVectorizedSuite, RapidsRegexpExpressionsSuite, RapidsStringExpressionsSuite, RapidsStringFunctionsSuite}
+import org.apache.spark.sql.rapids.suites.RapidsCastSuite
+import org.apache.spark.sql.rapids.suites.RapidsDataFrameAggregateSuite
+import org.apache.spark.sql.rapids.suites.RapidsJsonExpressionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsJsonFunctionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsJsonSuite
+import org.apache.spark.sql.rapids.suites.RapidsMathExpressionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsMathFunctionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsMiscFunctionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetAvroCompatibilitySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetColumnIndexSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetCompressionCodecPrecedenceSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetDeltaByteArrayEncodingSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetDeltaEncodingInteger
+import org.apache.spark.sql.rapids.suites.RapidsParquetDeltaEncodingLong
+import org.apache.spark.sql.rapids.suites.RapidsParquetDeltaLengthByteArrayEncodingSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetEncodingSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetFieldIdIOSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetFieldIdSchemaSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetFileFormatSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetInteroperabilitySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetPartitionDiscoverySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetProtobufCompatibilitySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetQuerySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetRebaseDatetimeSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetSchemaPruningSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetSchemaSuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetThriftCompatibilitySuite
+import org.apache.spark.sql.rapids.suites.RapidsParquetVectorizedSuite
+import org.apache.spark.sql.rapids.suites.RapidsRegexpExpressionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsStringExpressionsSuite
+import org.apache.spark.sql.rapids.suites.RapidsStringFunctionsSuite
+
 
 // Some settings' line length exceeds 100
 // scalastyle:off line.size.limit