Updates engine to be based upon the V1 plan interfaces

[rchowell]

Relevant Issues

#1535

Description

This is a follow-up to #1535 which initialized the V1 plan builders.

This PR...

• Consolidates/simplifies where the implementations live.
• Uses deferred builders with custom factories

Other Information

• Updated Unreleased Section in CHANGELOG: NO
• Any backward-incompatible changes? NO
• Any new external dependencies? NO
• Do your changes comply with the Contributing Guidelines
  and Code Style Guidelines? YES

License Information

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

CROSS-ENGINE Conformance Report ❌

	BASE (LEGACY-96726D8)	TARGET (EVAL-96726D8)	+/-
% Passing	90.45%	81.97%	-8.48% ⭕
Passing	5333	4833	-500 ⭕
Failing	563	1063	500 ⭕
Ignored	0	0	0 ✅
Total Tests	5896	5896	0 ✅

Testing Details

• Base Commit: 96726d8
• Base Engine: LEGACY
• Target Commit: 96726d8
• Target Engine: EVAL

Result Details

• ❌ REGRESSION DETECTED. See Now Failing Tests. ❌
• Passing in both: 4393
• Failing in both: 123
• PASSING in BASE but now FAILING in TARGET: 940
• FAILING in BASE but now PASSING in TARGET: 440

Now Failing Tests ❌

The complete list can be found in GitHub CI summary, either from Step Summary or in the Artifact.

Now Passing Tests

440 test(s) were previously failing in BASE (LEGACY-96726D8) but now pass in TARGET (EVAL-96726D8). Before merging, confirm they are intended to pass.

The complete list can be found in GitHub CI summary, either from Step Summary or in the Artifact.

CROSS-COMMIT-LEGACY Conformance Report ✅

	BASE (LEGACY-A54F6AD)	TARGET (LEGACY-96726D8)	+/-
% Passing	89.65%	90.45%	0.80% ✅
Passing	5286	5333	47 ✅
Failing	610	563	-47 ✅
Ignored	0	0	0 ✅
Total Tests	5896	5896	0 ✅

Testing Details

• Base Commit: a54f6ad
• Base Engine: LEGACY
• Target Commit: 96726d8
• Target Engine: LEGACY

Result Details

• Passing in both: 5286
• Failing in both: 563
• PASSING in BASE but now FAILING in TARGET: 0
• FAILING in BASE but now PASSING in TARGET: 47

Now Passing Tests

47 test(s) were previously failing in BASE (LEGACY-A54F6AD) but now pass in TARGET (LEGACY-96726D8). Before merging, confirm they are intended to pass.

The complete list can be found in GitHub CI summary, either from Step Summary or in the Artifact.

CROSS-COMMIT-EVAL Conformance Report ❌

	BASE (EVAL-A54F6AD)	TARGET (EVAL-96726D8)	+/-
% Passing	94.22%	81.97%	-12.25% ⭕
Passing	5555	4833	-722 ⭕
Failing	74	1063	989 ⭕
Ignored	267	0	-267 ✅
Total Tests	5896	5896	0 ✅

Testing Details

• Base Commit: a54f6ad
• Base Engine: EVAL
• Target Commit: 96726d8
• Target Engine: EVAL

Result Details

• ❌ REGRESSION DETECTED. See Now Failing Tests. ❌
• Passing in both: 4647
• Failing in both: 74
• PASSING in BASE but now FAILING in TARGET: 908
• FAILING in BASE but now PASSING in TARGET: 0

Now Failing Tests ❌

The complete list can be found in GitHub CI summary, either from Step Summary or in the Artifact.