[Search v2.4] Use text style for router input

[luacmartins]

Problem

Coming from here, we should use text color for the search router input text.

Solution

Update the text color

Issue Owner

Current Issue Owner: @greg-schroeder

[melvin-bot]

Triggered auto assignment to @greg-schroeder (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[greg-schroeder]

there are no contributors here, so this can be closed as soon as it's merged and deployed to prod