chore(26.10): migrate libtcnative-1 to libtcnative-2

[lczyk]

Proposed changes

carbon-copy of #1053

Related issues/PRs

Forward porting

• chore(26.10): migrate libtcnative-1 to libtcnative-2 #1121 (this PR)
• chore(26.04): migrate libtcnative-1 to libtcnative-2 #1053

Checklist

• I have read the contributing guidelines
• I have tested my changes (see how)
• I have already submitted the CLA form

Additional Context

26.10 is in devel mode and chisel does not, at the moment, support 26.10. hence, the 26.10 branch is just being kept up to date with 26.04. the state of this branch vs its 26.04 version ought to be identical.

to check either of the below, first add the remotes and fetch:

the commit history can be checked with:

$ git range-diff --no-patch \
    canonical/ubuntu-26.04..vpa1977/libtcnative-resolute \
    canonical/ubuntu-26.10..lczyk/feat/26.10/libtcnative-2
1:  88f7d477 = 1:  6e5787b5 chore: migrate libtcnative-1 to libtcnative-2
2:  6b735109 = 2:  8b5ae646 fix: remove list from tcnative copyright
3:  f9d4090e < -:  -------- chore: trigger ci
4:  4f1acb73 = 3:  1db6529c chore: restore libtcnative-1 slice
5:  d795d96b = 4:  ad48f18a chore: restore libtcnative-1 spread test

and the diff of the entire branch with:

$ diff <(git diff canonical/ubuntu-26.04...vpa1977/libtcnative-resolute) <(git diff canonical/ubuntu-26.10 lczyk/feat/26.10/libtcnative-2)

[github-actions]

Diff of dependencies:
None found.

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[cjdcordeiro]

merging to keep in line with #1053 (comment)