fix: support full null runtimes

[elpete]

Summary

• distinguish absent optional values from real nulls before dereferencing TestBox configuration and lazy services
• preserve default coverage, discovery, runner, metadata, and mock-generation behavior when full null support is enabled
• add an Adobe 2023 full-null CI job alongside the existing engine matrix

Regression coverage

• adds FullNullSupportTest, which exercises the public BaseSpec helper APIs and TestBox.dryRun without URL filters
• adds public CoverageService option-default coverage for omitted nested settings
• both specs reproduce failures seen while enabling Quick full-null coverage before the source guards are applied

Validation

• Lucee 6, full null: 415 passed, 0 failed, 0 errored, 22 skipped
• Lucee 6, standard null behavior: 415 passed, 0 failed, 0 errored, 22 skipped
• cfformat check passed for all changed CFML files
• git diff --check passed

Supports the full-null engine matrix work in coldbox-modules/quick#312.

[github-actions]

lucee@7 21 fullNull=false Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

lucee@6 21 fullNull=false Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

boxlang@be 21 fullNull=false Test Results

  1 files   30 suites   8s ⏱️
737 tests 716 ✅ 21 💤 0 ❌
754 runs  722 ✅ 32 💤 0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

boxlang@1 21 fullNull=false Test Results

  1 files   30 suites   8s ⏱️
737 tests 716 ✅ 21 💤 0 ❌
754 runs  722 ✅ 32 💤 0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

boxlang-cfml@1 21 fullNull=false Test Results

  1 files   30 suites   10s ⏱️
738 tests 717 ✅ 21 💤 0 ❌
754 runs  723 ✅ 31 💤 0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

adobe@2023 21 fullNull=false Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

adobe@2023 21 fullNull=true Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.

[github-actions]

adobe@2025 21 fullNull=false Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 50db0b6.

♻️ This comment has been updated with latest results.