refactor(toast): deprecate component

[jinlee93]

Summary:

marks the Toast component as deprecated, an AI result of 6/6 design pairing

Test Plan:

• Manually tested my changes, and here are the details:
  • attempting to use it has the TS warnings and strikethrough
  • deprecated tag added to stories
  • not used in other EDS components in code

[github-actions]

size-limit report 📦

Path	Size
components	95 KB (+0.01% 🔺)
styles	36.4 KB (0%)

[codecov]

Codecov Report

Merging #1652 (7c6e02b) into next (35dde31) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             next    #1652   +/-   ##
=======================================
  Coverage   93.29%   93.29%           
=======================================
  Files         222      222           
  Lines        2955     2955           
  Branches      717      717           
=======================================
  Hits         2757     2757           
  Misses        181      181           
  Partials       17       17           

Impacted Files	Coverage Δ
src/components/Toast/Toast.tsx	92.85% <ø> (ø)

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