bug(typography): deprecated typography config doesn't pass input level to underlying config function

[lagatchell]

Reproduction

Steps to reproduce:

1. Define a typography config in styles.scss and add a typography level for $input

$custom-typography: mat-typography-config(
  $input: mat-typography-level(14px, 1.25, 400)
);

2. Add @debug to print the resulting configuration

@debug $custom-typography;

3. npm start
4. Notice that the typography level for input is still the default
   

Expected Behavior

The mat-topography-config function should correctly apply a mat-typography-level for $input.

Actual Behavior

$input argument is ignored, because it is never passed to the underlying define-typography-config function.
https://github.com/angular/components/blob/12.0.x/src/material/core/typography/_typography-deprecated.scss#L36

I would be willing to contribute a fix for this issue.

Environment

• Angular: 12.x
• CDK/Material: 12.x
• Browser(s): All
• Operating System (e.g. Windows, macOS, Ubuntu): Windows

[ShiftyMcCool]

Just encountered this issue, any update on the fix?