Add cancel timeout when cancelling actions

[mini-1235]

---

Basic Info

Info	Please fill out this column
Ticket(s) this addresses	closes #4659
Primary OS tested on	Ubuntu
Robotic platform tested on	Tb4
Does this PR contain AI generated software?	(No; Yes and it is marked inline in the code)
Was this PR description generated by AI software?	Out of respect for maintainers, AI for human-to-human communications are banned

---

Description of contribution in a few bullet points

Description of documentation updates required from your changes

Description of how this change was tested

---

Future work that may be required in bullet points

For Maintainers:

• Check that any new parameters added are updated in docs.nav2.org
• Check that any significant change is added to the migration guide
• Check that any new features OR changes to existing behaviors are reflected in the tuning guide
• Check that any new functions have Doxygen added
• Check that any new features have test coverage
• Check that any new plugins is added to the plugins page
• If BT Node, Additionally: add to BT's XML index of nodes for groot, BT package's readme table, and BT library lists
• Should this be backported to current distributions? If so, tag with backport-*.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
...tree/include/nav2_behavior_tree/bt_action_node.hpp	77.27% <100.00%> (+3.22%)	⬆️
...ee/include/nav2_behavior_tree/bt_action_server.hpp	83.33% <ø> (ø)
...clude/nav2_behavior_tree/bt_action_server_impl.hpp	88.94% <100.00%> (-0.75%)	⬇️

... and 25 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[SteveMacenski]

Please rename to cancel_timeout instead, I think that's more clear. It is used in Halt, but it is for cancellations. Otherwise LGTM

Edit: Ditto with the docs PR. Also add to the migration guide and the reason 'why'. I think that breadcrumb trail could help the next person with this error easily.

[mini-1235]

I am not sure why github sometimes close my PR when I push a commit :(

[mini-1235]

Do you want me to do the backports manually?

[SteveMacenski]

Yeah, the autobackports failed

[mini-1235]

will do tomorrow, I am heading to bed now :)