[Settings] Center hint text in search bar and fix padding.

[whiskeyPeak]

Centers search bar hint text by increasing it to 46 pixels high. Will submit an issue to the flutter repo.

Also fixes some padding to make the search bar more symmetric.

[whiskeyPeak]

Before:

After:

[whiskeyPeak]

Also added a maximum 15 character limit to limit overflow within the searchbar

[whiskeyPeak]

You should probably just have the text scroll instead of limiting the text inside of it.

Wdym? Like revert back to it having an unlimited length?

[DattatreyaReddy]

Also added a maximum 15 character limit to limit overflow within the searchbar

Is it ok to do this?

I mean search bar can't have any word limit right?