RN Android: Edit Channel "Save" text color is black instead of white

Description

Regression on v1.22. Only affects Android. Found on build 220.
When "Save" is enabled, the text color changes from grey to black, making the text very hard to read on dark themes. On v1.21, the text color changes to white.

Steps:
1. Log in on RN Android
2. Open a channel and tap on the header
3. Tap 'Edit Channel"
4. Enter/edit text in any field

Observed: "Save" text color changes to black.
Expected: "Save" button text changes to white.

Note: Attached screenshots show the issue on white and dark theme.

QA Test Steps

see description

Status

Mana

None

Assignee

Elias Nahum

Reporter

Ogi Marusic

Epic Link

None

Fix versions

Mattermost Team

Apps

Sprint

None

Labels

GitHub Issue

None

QA Assignee

Lindy Isherwood

QA Testing Areas

Mobile - RN