[TextInputEditText] Performance Issue when typing.

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**Description:**
There is an issue when a when use the TextInputEditText with android:inputType="textPassword" there is a half to quarter of a second delay on every single keystroke.

**Expected behavior:**
No noticeable delay between keystrokes.

**Source code:**
https://github.com/adfwhitestar/Performance-Issue-View/tree/master
Run this repo and you will see the issue.

**Android API version:** Tested SDK: 26 ,27 ,28 ,29 ,30

**Material Library version:**
This happens only at 1.2.0 and up. (1.2.0 & 1.2.1 as of writing this report.)

**Device:**
This code tested on a Pixel 2 XL running Android 10.

Original issue seen on Pixel 4, 3, 3a, 2 XL, Samsung fold, LG V40, S10e and S10

To help us triage faster, please check to make sure you are using the [latest version](https://github.com/material-components/material-components-android/releases) of the library.

This issue does not happen on 1.1.0 but does happen in 1.2.0 and 1.2.1

Media showing issue in action:
[1.2.1-issue](https://github.com/adfwhitestar/Performance-Issue-View/blob/master/media/1.2.1-issue.mp4)
[1.2.0-issue](https://github.com/adfwhitestar/Performance-Issue-View/blob/master/media/1.2.0-issue.mp4)
[1.1.0-no-issue](https://github.com/adfwhitestar/Performance-Issue-View/blob/master/media/1.1.0-no-issue.mp4)

Start by running the linked Performance-Issue-View reproduction and compare typing behavior with Material Library versions 1.1.0, 1.2.0, and 1.2.1 on the reported Android configurations. Investigate the TextInputEditText path involved by android:inputType="textPassword"; done means removing the per-keystroke delay without regressing the working 1.1.0 behavior.

Written by the indexing model from the issue text.