#36668 show not found for empty tag search result

What does this MR do?

Change the message shown when user search the tags. (#36668 (closed))

Previous Behavior

• When there are no tags, show "Repository has no tags yet"
• When there are tags but user filter does not produce any result, show "Repository has no tags yet"

Fixed Behavior

• When there are no tags, show "Repository has no tags yet"
• When there are tags but user filter does not produce any result, show "No tags found for [search word]"

Screenshots (strongly suggested)

When there are no tags, it always shows "Repository has no tags yet" as previously

When there are tags but query returns an empty result, it shows "No tags found for [search word]"

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers -> Only tested in Chrome and Safari
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team