Remove backup expectations

[davidmorgan]

Remove "backup expectations" in tests that were intended to account for matchers sometimes giving different results.

There was a bug on Windows that meant it didn't combine remove+add into modify, it looks like that accounts for a lot of the "backup expectations".

I'm not sure where the others came from: I tried running the tests in a loop on Windows+Linux+MacOS thousands of times after removing the backup expectations and didn't see a single error. So even if they were needed at some point, I don't think they are needed now.

Also remove a startup wait that is no longer needed.

Test failures on MacOS on dev SDK are unrelated, they are due to an SDK issue dart-lang/sdk#61693

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Package publishing

Package	Version	Status	Publish tag (post-merge)
package:bazel_worker	1.1.4	already published at pub.dev
package:benchmark_harness	2.4.0-wip	WIP (no publish necessary)
package:boolean_selector	2.1.2	already published at pub.dev
package:browser_launcher	1.1.3	already published at pub.dev
package:cli_config	0.2.1-wip	WIP (no publish necessary)
package:cli_util	0.5.0-wip	WIP (no publish necessary)
package:clock	1.1.3-wip	WIP (no publish necessary)
package:code_builder	4.11.0	already published at pub.dev
package:coverage	1.15.0	already published at pub.dev
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package:json_rpc_2	4.0.0	already published at pub.dev
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package:oauth2	2.0.4	ready to publish	oauth2-v2.0.4
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package:pub_semver	2.2.0	already published at pub.dev
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package:source_map_stack_trace	2.1.3-wip	WIP (no publish necessary)
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package:source_span	1.10.1	already published at pub.dev
package:sse	4.1.8	already published at pub.dev
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package:stream_channel	2.1.4	already published at pub.dev
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package:test_reflective_loader	0.4.0	already published at pub.dev
package:timing	1.0.2	already published at pub.dev
package:unified_analytics	8.0.6	ready to publish	unified_analytics-v8.0.6
package:watcher	1.1.5-wip	WIP (no publish necessary)
package:yaml	3.1.3	already published at pub.dev
package:yaml_edit	2.2.2	already published at pub.dev

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pkgs/html/lib/src/constants.dart
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pkgs/html/lib/src/list_proxy.dart
pkgs/html/lib/src/query_selector.dart
pkgs/html/lib/src/token.dart
pkgs/html/lib/src/tokenizer.dart
pkgs/html/lib/src/treebuilder.dart
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pkgs/html/test/selectors/level1_baseline_test.dart
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pkgs/html/test/selectors/selectors.dart
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pkgs/html/test/tokenizer_test.dart
pkgs/html/test/trie_test.dart
pkgs/html/tool/generate_trie.dart
pkgs/pubspec_parse/test/git_uri_test.dart
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pkgs/watcher/test/custom_watcher_factory_test.dart
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[chloestefantsova]

Sorry for the delay. Somehow it fell through the cracks.

[davidmorgan]

Thanks!

I added a constant you can tweak to run the test lots of times and set it to 100 as a final check.

There was one failure on MacOS but it's unrelated to the removed backup assertions.

https://github.com/dart-lang/tools/actions/runs/18560153181/job/52906913524?pr=2209

So I think it's solid enough to go in. I set the constant back to 1, I can try to figure out if there's a good way to regularly do more runs another time :)