Closes: #8647Closes: #8649
**Changes & Why**
1. Added a Search Input to `SettingsDataModelFieldAddressForm` &
`SettingsDataModelFieldCurrencyForm` as `Select` component already
accepts it as a prop.
2. Gave a fixed width to the dropdown of both the above components to
ensure it doesn't shrink on search for the menu items with low word
count.
3. Added countries Flag to `SettingsDataModelFieldAddressForm`.
4. Replaced `MenuItem` with `MenuItemSelect` to get the desired
highlighted background for the selected item with `IconCheck` to
differentiate the current selected item. This is useful across all the
select components throughout the app.
5. I realized that in some components we might not need IconCheck and
only need a highlighted background for the selected item. For ex:
`SettingsDataModelFieldBooleanForm` . Therefore, I created a prop
`needIconCheck` with default as true so it doesn't break the existing
`MenuItemSelect` and we can pass that prop as false wherever needed.
[Screencast from 2024-12-21
12-08-08.webm](https://github.com/user-attachments/assets/4f8070a8-f339-4556-a137-bbbad58b171c)
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