feat: allow 'hidden' sourcemap to remove //# sourceMappingURL from generated maps

[xeoneux]

Description

Rollup supports hidden sourcemap where //# sourceMappingURL is not included in the generated sourcemap.

Additional context

This fixes #3683

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[Shinigami92]

Please also update docs:

vite/docs/config/index.md

Lines 584 to 589 in 6b4c355

	### build.sourcemap
	- **Type:** `boolean | 'inline'`
	- **Default:** `false`
	Generate production source maps.