frontend: i18n: Add missing translations for UI

[SinghaAnirban005]

Summary

This PR adds the missing Hindi translations for several UI components that were previously displaying English text despite the Hindi language being selected. Ensuring complete localization improves accessibility and user experience for Hindi-speaking users.

Fixes #3386

Changes Made

1. Updated glossary.json under hindi translations
2. Updated translation.json under hindi translation with missing key-values
3. Translated the filter placeholder in NamespacesAutocomplete.tsx

Screenshots

1. Global Search component

2. Filter placeholder

3. Expand/Shrink Sidebar labels

4. "General" tab in settings

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: SinghaAnirban005 / name: Anirban Singha (061b643, 56362b9)

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[skoeva]

Thanks for the fix! 😃

I think the changes to the Filter translations are unrelated to the missing Hindi translations, maybe they could be better separated by the commits. I would suggest the following:

• Separate the commits into (1) filling in missing Hindi translations and (2) the change to NamespacesAutocomplete with all the subsequent filter translations
• Adjust the PR title to reflect the broader scope of the changes (e.g. frontend: i18n: Add missing translations for UI)

[SinghaAnirban005]

@skoeva Will update it soon 🚀

[skoeva]

I can clarify what I mean by the separation. We can have two commits here:

• One commit for the missing Hindi translations (not including any of the changes to the "Filter" translations): frontend: i18n: Add missing Hindi translations
• One commit for the "Filter" translations (the NamespacesAutocomplete change as well as the updated translation files): something like frontend: NamespacesAutocomplete: Translate placeholder text

Be sure to rebase as well to keep the branch up to date

[skoeva]

LGTM 👍

[illume]

Fixed a conflict rebased against main.

[illume]

👍 thanks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: illume, SinghaAnirban005, skoeva

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