fix: skip heavy recursion tests in debug builds, keep one for assertion coverage (#22389)

## Summary
Fixes nightly barretenberg debug build failure (CI run
https://github.com/AztecProtocol/aztec-packages/actions/runs/24228497408).

**Root cause:** `AvmRecursionInnerCircuitTests.Tampering` from
`vm2_tests` timed out at 600s. CI log:
http://ci.aztec-labs.com/ee4d306df4cbfd3c

**Fix:**
1. Add `AvmRecursionInnerCircuitTests` to the debug build skip list
(matching PR #22446 pattern)
2. Reinstate
`HonkRecursionConstraintTestWithoutPredicate/1.GenerateVKFromConstraints`
(241s, well within timeout) so the debug-only
`native_verification_debug` code path in
`honk_recursion_constraint.cpp:126` is still exercised

**Debug assertion audit of all skipped suites:**
- `HonkRecursionConstraintTest`: The only unique debug code is
`native_verification_debug` (`#ifndef NDEBUG`, line 126) — a native
side-verification sanity check. All tampering tests call
`BB_DISABLE_ASSERTS()` so no debug assertions fire there. We keep
`/1.GenerateVKFromConstraints` to cover this.
- `ChonkRecursionConstraintTest`: All `BB_ASSERT_DEBUG` in `chonk.cpp`
are disabled by `BB_DISABLE_ASSERTS()` in the test. `ChonkTests`
tampering (separate binary, not skipped) still runs.
- `AvmRecursionInnerCircuitTests`: Only `BB_ASSERT_LTE` (circuit size
bounds) which is hit on the happy path by `AvmRecursiveTests`.

ClaudeBox log: https://claudebox.work/s/7d8cbad767a56122?run=5

Author: AztecBot

barretenberg/cpp/bootstrap.sh

@@ -247,8 +247,12 @@ function test_cmds_native {
       while read -r test; do
         # Skip heavy recursion tests in debug builds — they take 400-600s and the same
         # code paths are already exercised (with assertions) by faster tests in the suite.
-        if [[ "$native_preset" == *debug* ]] && [[ "$test" =~ ^(HonkRecursionConstraintTest|ChonkRecursionConstraintTest) ]]; then
-          continue
+        # Keep WithoutPredicate/1.GenerateVKFromConstraints (241s) so that the debug-only
+        # native_verification_debug path in honk_recursion_constraint.cpp is still exercised.
+        if [[ "$native_preset" == *debug* ]] && [[ "$test" =~ ^(HonkRecursionConstraintTest|ChonkRecursionConstraintTest|AvmRecursionInnerCircuitTests) ]]; then
+          if [[ "$test" != "HonkRecursionConstraintTestWithoutPredicate/1.GenerateVKFromConstraints" ]]; then
+            continue
+          fi
         fi
         local prefix=$hash
         # A little extra resource for these tests.