[antithesis] Enable reuse of banff e2e test for antithesis testing

[marun]

Why this should be merged

Having to duplicate existing test coverage to benefit from execution with antithesis is not ideal. Better to be able to trivially refactor compatible e2e coverage for reuse. This PR refactors the banff e2e test for reuse with antithesis to demonstrate that this is possible.

How this works

• adds new APITestFunction type that a compatible e2e test can implement to allow for execution with both ginkgo and antithesis
• adds ExecuteAPITest helper to simplify execution of an APITestFunction with ginkgo
• Refactors the banff e2e test into an APITestFunction executed by ExecuteAPITest
• Refactors the avalanchego antithesis test setup to support execution of the banff test
  • Moves test dispatch into a new function so that panics can be recovered via a deferred function
    • This supports use of require by e2e tests without risking an unhandled panic exiting the test process

How this was tested

CI

TODO

• Ensure banff test is actually compatible with the funding provided by the antithesis workload

  • i.e. https://github.com/ava-labs/avalanchego/actions/runs/11919591309/job/33219631694?pr=3554#step:5:134

• Ensure antithesis-specific test abort if shared memory is not found (indicating node restart)

 	Error Trace:	tests/e2e/banff/suites.go:95
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:89
	Error:      	Received unexpected error:
	            	failed to decode client response: couldn't issue tx: failed verification: failed execution: standard tx Y6j5fJ84dxQYxt3R8CVh8YK87WXrzJjdPtrC9fWXYaa4dJaCm failed execution: failed to get shared memory: not found

Error Trace:	tests/e2e/banff/suites.go:95
               				tests/simple_test_context.go:167
               				tests/e2e/banff/suites.go:89
   Error:      	Received unexpected error:
               	failed to decode client response: couldn't issue tx: failed verification: failed execution: standard tx 2FXNbGVxrQ9qHUjwhVWzjrepAA2J71xkizC4gCQnJuZtQLvTYB failed execution: failed to get UTXO 11111111111111111111111111111111LpoYY:0: not found

• Ensure a transaction is only attempted if sufficient funds exist to pay for it

Error Trace:	tests/e2e/banff/suites.go:95
               				tests/simple_test_context.go:167
               				tests/e2e/banff/suites.go:89
   Error:      	Received unexpected error:
               	couldn't generate tx inputs/outputs: insufficient funds: provided UTXOs needed 81008 more nAVAX ("2fombhL7aGPwj3KH4bfrmJwW6PVnMobf9Y2fn9GwxiAAJyFDbe")

• Ensure failed connections caused by fault injection are retried or abort the test

Error Trace:	tests/e2e/banff/suites.go:95
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:89
	Error:      	Received unexpected error:
	            	context deadline exceeded

	Error Trace:	tests/e2e/banff/suites.go:95
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:89
	Error:      	Received unexpected error:
	            	failed to issue request: Post "http://10.0.20.4:9650/ext/P": EOF

	Error Trace:	tests/e2e/banff/suites.go:123
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:117
	Error:      	Received unexpected error:
	            	failed to issue request: Post "http://10.0.20.3:9650/ext/bc/X": dial tcp 10.0.20.3:9650: connect: connection refused

	Error Trace:	tests/e2e/banff/suites.go:86
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:70
	Error:      	Received unexpected error:
	            	failed to issue request: Post "http://10.0.20.3:9650/ext/bc/X": dial tcp 10.0.20.3:9650: i/o timeout

	Error Trace:	tests/e2e/banff/suites.go:66
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:51
	Error:      	Received unexpected error:
	            	received status code: 404

	Error Trace:	tests/e2e/banff/suites.go:66
	            				tests/simple_test_context.go:167
	            				tests/e2e/banff/suites.go:51
	Error:      	Received unexpected error:
	            	failed to issue request: Post "http://10.0.20.4:9650/ext/bc/X": read tcp 10.0.20.129:60442->10.0.20.4:9650: read: connection reset by peer

Need to be documented in RELEASES.md?

N/A

[marun]

Switched to draft in light of wanting to rebase on #3557

[marun]

Moving to draft and adding a bunch of TODOs prompted by a manually-triggered antithesis run. The error handling of the e2e test is not sufficiently robust, so there are a lot of unhelpful errors that need to be addressed before this PR will be mergeable.