feat(tab-indicator): Remove transitionend event handling

[trimox]

This reworks Tab Indicator transition styles and logic such that we don't need to handle transitionend whatsoever. This allows pulling event handling out of its foundation/adapter outright, without even needing to hook anything up in the component.

reference: material-components/material-components-web#3337

[codecov]

Codecov Report

Merging #1243 into master will increase coverage by 0.08%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1243      +/-   ##
==========================================
+ Coverage   93.25%   93.33%   +0.08%     
==========================================
  Files         173      173              
  Lines        6628     6620       -8     
  Branches      970      968       -2     
==========================================
- Hits         6181     6179       -2     
+ Misses        447      441       -6

Impacted Files	Coverage Δ
packages/tab-indicator/tab-indicator.ts	85.36% <100%> (+5.36%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9f2f912...79e0ab3. Read the comment docs.