Apply aria-label and aria-invalid attributes to MaterialInputComponent's input

field.

This fixes a bug introduced in cl/191340003, in which these attributes were
erroneously removed.

PiperOrigin-RevId: 193551338

Author: Googler

lib/material_input/material_input.html

@@ -45,6 +45,8 @@
              [multiple]="multiple"
              [readonly]="disabled"
              [attr.role]="inputRole"
+             [attr.aria-label]="inputAriaLabel"
+             [attr.aria-invalid]="invalid"
              [attr.aria-owns]="inputAriaOwns"
              [attr.aria-activedescendant]="inputAriaActivedescendent"
              [attr.aria-expanded]="inputAriaExpanded"