tls: move _tls_* to end-of-life

[bjohansebas]

So that in Node.js 26 these modules are no longer there, and are now internal to Node.js only instead of public.

[nodejs-github-bot]

Review requested:

• @nodejs/startup
• @nodejs/userland-migrations

[bjohansebas]

cc: @nodejs/tsc since it’s an end-of-life deprecation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.52%. Comparing base (60b9aaa) to head (007a825).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #60658      +/-   ##
==========================================
- Coverage   88.54%   88.52%   -0.03%     
==========================================
  Files         703      701       -2     
  Lines      208077   208054      -23     
  Branches    40082    40084       +2     
==========================================
- Hits       184252   184189      -63     
- Misses      15848    15897      +49     
+ Partials     7977     7968       -9     

Files with missing lines	Coverage Δ
lib/internal/main/mksnapshot.js	95.83% <ø> (-0.04%)	⬇️
src/node_builtins.cc	79.32% <ø> (-0.25%)	⬇️

... and 45 files with indirect coverage changes

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