[Python] TypeSpec migration for azure-mgmt-apimanagement

[msyyc]

TypeSpec Migration SDK Output for azure-mgmt-apimanagement

This draft PR contains the SDK output comparison for the TypeSpec migration of azure-mgmt-apimanagement.

Pre-migration swagger source

specification/apimanagement/resource-manager @ cae4dfe6

Commits

1. Swagger SDK generation - Generated from swagger at pre-migration commit cae4dfe6
2. TypeSpec SDK generation - Generated from TypeSpec at bee1dd3e
3. Changelog - Breaking change report comparison

Breaking Change Analysis Summary

Classification	Count
Total breaking changes	803
ACCEPT	797 (99.3%)
MITIGATE	6 (0.7%)

Mitigations (Spec PR)

Spec PR with mitigations: Azure/azure-rest-api-specs#41752

Accepted Breaking Changes (797) - Categorized

Category	Count	Reason
Flattening removal	462	Multi-level flattened properties removed; models reflect REST API hierarchy
if_match to etag/match_condition	190	New operation design replaces if_match header pattern
Keyword-only parameters	66	Query/header params changed from positional to keyword-only
Pageable model removal	63	Collection/List models removed; paging handled internally
Default value changes	9	format parameter default changed
Unreferenced model removal	6	Unused models removed
Common type upgrade	1	Common type property change