Add new `MessageOneof` rule#377

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smaye81 merged 9 commits intomainfrom

sayers/message_oneof_rule

Jun 11, 2025

Commits on Jun 10, 2025

Oneof rule
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Commits on Jun 11, 2025

Format
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Feedback
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Feedback
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Format
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Remove no fields test case (for now)
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Feedback re: oneof phrasing
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