chore(text-field): Remove ripple class for outlined text-field

[trimox]

As per recent upstream decision.

Justifications:

• It's awkward to see a ripple when clicking/tapping inside an already-focused text field with the sole intent of relocating the cursor or selecting text
• There are already enough other visual indicators, e.g. the line ripple (which also animates based on the pointer's X coordinate), and the addition of focus shade when initially focusing a text field

reference: material-components/material-components-web#2354

[codecov]

Codecov Report

Merging #754 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #754      +/-   ##
==========================================
- Coverage   92.48%   92.47%   -0.01%     
==========================================
  Files         155      155              
  Lines        6145     6140       -5     
  Branches      946      946              
==========================================
- Hits         5683     5678       -5     
  Misses        462      462

Impacted Files	Coverage Δ
src/lib/textfield/outline.ts	84.61% <100%> (-1.35%)	⬇️

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