Remove extra loader and add success notification on link skills page

[Pranshu1902]

WHAT

🤖 Generated by Copilot at 77c103e

This pull request enhances the skills management feature for users in care_fe. It improves the UI and feedback in SkillsSlideOver.tsx and fixes some minor bugs.

Proposed Changes

• Fixes Add Skill shows so many loaders and no success Notification #6209
  http://localhost:4000/users
  Removed extra loaders and added a success Notification when a skill is added successfully.

@coronasafe/care-fe-code-reviewers @coronasafe/code-reviewers

Merge Checklist

• Add specs that demonstrate bug / test a new feature.
• Update product documentation.
• Ensure that UI text is kept in I18n files.
• Prep screenshot or demo video for changelog entry, and attach it to issue.
• Request for Peer Reviews
• Completion of QA

HOW

🤖 Generated by Copilot at 77c103e

• Add a success notification when a skill is added to a user (link)
• Prevent the UI from jumping and showing an empty select while fetching the skills by moving the loading indicator inside the tooltip div and rendering the skill select and the add button only when the loading is finished (link)
• Avoid showing the tooltip text when the user can add skills by moving it inside the button div and rendering it only when the button is disabled (link)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
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[nihal467]

LGTM