Problem: Several short resource keys in src/Compilers/Core/Portable/CodeAnalysisResources.resx (e.g. Return1) are ambiguous to translators because the English tokens are short words that can be either verbs or nouns. The localization team will update the XLF translations themselves, but we need to add clarifying translator comments in the original resource (.resx) so the loc team has the authoritative context.

Scope: Make a single-source change to the repository 'dotnet/roslyn' on branch 'main' by creating a new branch and a PR that updates only the .resx file at src/Compilers/Core/Portable/CodeAnalysisResources.resx.

Required changes:

1. Update the existing elements for the following resource names in src/Compilers/Core/Portable/CodeAnalysisResources.resx: Attribute, Delegate1, Event1, Field, Property, Return1.
2. For each of these entries add a (ResX comment) that gives concise translator guidance that the English source token is the language element (noun) and not a verb. For Return1 clarify that "return" is the noun meaning "return value" (the value returned from a method) and not the verb "to return" and instruct translators to prefer the noun equivalent in their language.
3. Do NOT modify any .xlf files in the repo. Do not change any translations — only add or update elements in the .resx file.

Exact XML to insert/replace the corresponding elements with (keep encoding/xml structure intact):

attribute Clarification: the English word 'attribute' here is the language element (noun) meaning an attribute, not the verb 'to attribute'. delegate Clarification: the English word 'delegate' here is the language element (noun) meaning the delegate type, not the verb 'to delegate'. event Clarification: the English word 'event' here is the language element (noun) meaning an event member, not a verb. field Clarification: the English word 'field' here is the language element (noun) meaning a member field, not the verb 'to field'. property, indexer Clarification: the English word 'property' here refers to the language element (noun) meaning a property or indexer, not a verb. return Clarification: the English source 'return' here is a noun meaning 'return value' (the value returned from a method), not the verb 'to return'. Use the noun meaning when translating.

Branch and PR details:

• Create a branch named: localization/add-resx-translator-comments-return1
• Commit message: "Add translator comments clarifying noun meanings for short language-element resources"
• Open a PR against 'main' with a descriptive title and the problem summary: explain that this adds translator comments to the .resx so localization teams have context to pick noun translations (e.g. Japanese should use 戻り値 for return) and that XLF files are intentionally not modified.

Guidance for the agent performing the change:

• Preserve file encoding and other file contents; only update the specified elements' contents to include the blocks above.
• Run repo formatters if the repo has an automated requirement, but keep changes minimal.
• Ensure the PR description calls out explicitly: "Do not change .xlf files; loc team will update translations from these comments." and link to the original issue: Japanese translation for "return value" should be "戻り値" rather than "戻る" #82070

Testing/validation:

• No functional code changes; CI shouldn't be impacted. Verify the resulting .resx is well-formed XML.

Deliverables:

• A PR on dotnet/roslyn titled: "Add translator comments clarifying noun meanings for short language-element resources"
• The branch: localization/add-resx-translator-comments-return1
• A short PR description explaining the motivation and referencing the issue Japanese translation for "return value" should be "戻り値" rather than "戻る" #82070.

Do not make any other changes beyond what's described above.