react: ignore unused import removal if the import is used in needles.

[mshima]

Some imports are required only by entity needles and are removed by eslint at generation.
Currently those imports need to be manually added otherwise the file will be broken.

This PR:

• adjust eslint config to parse inline config but don’t report/remove them.
• add ignore eslint rule to the lines that should not be removed.
• add hasNonBuiltInEntity property to application so ignored lines can be optionally written.

Alternative fix for #28855.

Fixes #28855.
Closes #28866.

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