fix(ui-simple-select): ensure input value updates correctly when options change

[Kadirsaglm]

• Fixed an issue where the input value was not updated appropriately when the list of options was changed.
• Implemented behavior to clear the input if the previously selected option is no longer available in the updated options.
• Ensured the input value persists if the previously selected option remains in the updated options list.

[balzss]

thank you for the PR, nice work! two things:

• the ts build is failing, please take a look at that (you can locally run npm run bootstrap which runs the ts build too)
• we are in the process of migrating our test suit from karma to vitest. the old tests are in the __tests__ folder and new ones are in the __new_tests__ dir, please write your test in the new format

[matyasf]

I like the solution and the code, thanks for the contribution!

[balzss]

great work!