Clean up custom element decorators

[smhigley]

Quick PR to update missing properties and attributes on custom element decorators

[codecov]

Codecov Report

Merging #549 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #549   +/-   ##
=======================================
  Coverage   97.32%   97.32%           
=======================================
  Files          32       32           
  Lines        2546     2546           
  Branches      645      645           
=======================================
  Hits         2478     2478           
  Misses          9        9           
  Partials       59       59

Impacted Files	Coverage Δ
src/time-picker/index.ts	95.33% <ø> (ø)	⬆️
src/combobox/index.ts	97.71% <ø> (ø)	⬆️
src/text-area/index.ts	98.96% <ø> (ø)	⬆️
src/split-pane/index.ts	92.92% <ø> (ø)	⬆️
src/tab/index.ts	100% <ø> (ø)	⬆️
src/checkbox/index.ts	96.93% <ø> (ø)	⬆️
src/radio/index.ts	96.34% <ø> (ø)	⬆️
src/button/index.ts	100% <ø> (ø)	⬆️
src/enhanced-text-input/index.ts	100% <ø> (ø)	⬆️
src/text-input/index.ts	99.05% <ø> (ø)	⬆️
... and 1 more

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