Fix: Remove redundant loading dots from LoadingSpan UI

[TilakSharma07]

Removed the redundant blinking dots from LoadingSpan.vue to ensure only a single loading spinner animation is displayed, making the UI cleaner.

Fixes #14275

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. Open the Galaxy UI and trigger any tool or process that shows the loading state.
  2. Verify that only the spinning circle is visible, without the extra blinking dots.

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.