Playground: Virtual file name discrepancy between playground (input.ts) and docs & rule tests (file.ts) #9269
Description
Suggestion
Splitting out of https://github.com/typescript-eslint/typescript-eslint/pull/9234/files#r1624918878: we have two different virtual file names used in our tooling.
The playground uses input.ts:
...while docs and rule tests use file.ts:
Rule options such as #8404 that care about file name need a stable name to work the same in both.
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