feat: Improve some confusing fallback reasons

[wForget]

Which issue does this PR close?

Closes #2300.

Rationale for this change

Comet cannot accelerate ProjectExec because: Comet is not enabled

We do not need to add fallback info for spark plan node when Comet is not enabled

Comet cannot accelerate ProjectExec because: Comet Scan is not enabled

Comet Scan is not enabled fallback reason should be placed in the scan node

Comet cannot accelerate CometProjectExec because: Metadata column is not supported

ditto

Comet cannot accelerate ShuffleExchangeExec because: spark.shuffle.manager is not set to org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager$

CometShuffleManager class name should be org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager

What changes are included in this PR?

Improve some confusing fallback reasons

How are these changes tested?

disable comet shuffle manager conf in CometTestBase and run the following test case:

  test("test fallback reasons") {
    withSQLConf(CometConf.COMET_LOG_FALLBACK_REASONS.key -> "true") {
      withTable("t1") {
        sql("create table t1 using parquet as select id as c1, id + 1 as c2 from range(10)")

        // Comet cannot accelerate ProjectExec because: Comet is not enabled
        withSQLConf(CometConf.COMET_ENABLED.key -> "false") {
          sql("select c1 + c2 from t1").collect()
        }
        // Comet cannot accelerate ProjectExec because: Comet Scan is not enabled
        withSQLConf(CometConf.COMET_NATIVE_SCAN_ENABLED.key -> "false") {
          sql("select c1 + c2 from t1").collect()
        }
        // Comet cannot accelerate CometProjectExec because: Metadata column is not supported
        sql("select _metadata from t1").collect()
        // Comet cannot accelerate ShuffleExchangeExec because: spark.shuffle.manager is not set to org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager$
        sql("select /*+ repartition */ * from t1").collect()
      }
    }
  }

before this:

Comet cannot accelerate ProjectExec because: Comet is not enabled

Comet cannot accelerate ProjectExec because: Comet Scan is not enabled
Comet cannot accelerate FileSourceScanExec because: Scan parquet spark_catalog.default.t1 is not supported

Comet cannot accelerate ProjectExec because: Metadata column is not supported
Comet cannot accelerate FileSourceScanExec because: Scan parquet spark_catalog.default.t1 is not supported

Comet cannot accelerate ShuffleExchangeExec because: spark.shuffle.manager is not set to org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager$

after this:

Comet cannot accelerate FileSourceScanExec because: Comet Scan is not enabled

Comet cannot accelerate FileSourceScanExec because: Metadata column is not supported

CometSparkSessionExtensions: Comet cannot accelerate ShuffleExchangeExec because: spark.shuffle.manager is not set to org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager

[codecov-commenter]

Codecov Report

❌ Patch coverage is 83.33333% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.00%. Comparing base (f09f8af) to head (7e5c900).
⚠️ Report is 459 commits behind head on main.

Files with missing lines	Patch %	Lines
...n/scala/org/apache/comet/rules/CometScanRule.scala	80.55%	2 Missing and 5 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2301      +/-   ##
============================================
+ Coverage     56.12%   58.00%   +1.87%     
- Complexity      976     1294     +318     
============================================
  Files           119      146      +27     
  Lines         11743    13378    +1635     
  Branches       2251     2378     +127     
============================================
+ Hits           6591     7760    +1169     
- Misses         4012     4356     +344     
- Partials       1140     1262     +122     

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[comphead]

Thanks @wForget would you mind attach how reasons look before and after

[wForget]

Thanks @wForget would you mind attach how reasons look before and after

Thanks, I have edited description to add more test information.

[wForget]

Already has fallback reason, we don't need to overwrite it

[comphead]

Thanks @wForget this is LGTM