refactor(transform/styled-components): update comments

[overlookmotel]

Follow-on after #12256. Update comments to reflect the new removal logic. Also tidy up some other comments.

[overlookmotel]

• refactor(estree): use SliceIterExt in string serializer #12297
• refactor(codegen): use SliceIterExt in string printer #12296
• refactor(transform/styled-components): use SliceIterExt #12295
• feat(data_structures): SliceIterExt extension trait #12294
• perf(transform/styled-components): optimize removal loop #12284
• refactor(transform/styled-components): rename var #12283
• refactor(transform/styled-components): update comments #12282 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12282 will not alter performance

_{Comparing 07-15-refactor_transform_styled-components_update_comments (6094099) with main (13c5783)}

Summary

✅ 34 untouched benchmarks

[graphite-app]

Merge activity

• Jul 15, 2:20 PM UTC: Dunqing added this pull request to the Graphite merge queue.
• Jul 15, 5:19 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 15, 5:19 PM UTC: overlookmotel added this pull request to the Graphite merge queue.
• Jul 15, 5:20 PM UTC: The merge label '0-merge' was removed. This PR will no longer be merged by the Graphite merge queue
• Jul 15, 5:21 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 15, 5:21 PM UTC: The merge label '0-merge' was removed. This PR will no longer be merged by the Graphite merge queue
• Jul 15, 5:22 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 15, 5:23 PM UTC: The merge label '0-merge' was removed. This PR will no longer be merged by the Graphite merge queue
• Jul 15, 5:27 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 15, 5:27 PM UTC: Merged by the Graphite merge queue.