Fix Local RadioTheme not being inherited by Radio Widget

[TahaTesser]

Complete details in #97691 (comment)
Related #97691

This PR matches

flutter/packages/flutter/lib/src/material/toggle_buttons.dart

Lines 900 to 902 in 6aed693

	final ThemeData theme = Theme.of(context);
	final ToggleButtonsThemeData toggleButtonsTheme = ToggleButtonsTheme.of(context);

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

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[goderbauer]

LGTM

[fluttergithubbot]

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