[Python] TypeSpec migration for azure-mgmt-managedapplications

[ChenxiJiang333]

[Python] TypeSpec migration for azure-mgmt-managedapplications

Spec PR: https://github.com/Azure/azure-rest-api-specs-pr/pull/27607
Pre-migration swagger source: specification/solutions/resource-manager@6fe7a35e
Swagger API version: 2021-07-01 (default tag: package-managedapplications-2021-07)
Generated with apiVersion: 2023-12-01-preview (latest in TypeSpec enum Versions)

Note: Package renamed from azure-mgmt-managedapplication (swagger) to azure-mgmt-managedapplications (TypeSpec).

Breaking Change Analysis Summary

• Mitigated: 1 (client name)
• Accepted: 32
• Spec mitigation PR: https://github.com/cxznmhdcxz/azure-rest-api-specs-pr/pull/1

Mitigated Breaking Changes

#	Breaking Change	Mitigation
1	Deleted or renamed client ApplicationClient	@@clientName(Microsoft.Solutions, "ApplicationClient", "python") in back-compatible.tsp

Accepted Breaking Changes (will remain)

#	Breaking Change	Guide Section	Reason
1	Deleted client method ApplicationClient.list_operations	Structural	Replaced by operations operation group
2	ApplicationsOperations.list_allowed_upgrade_plans async→sync	§8 Pageable	Pageable operation returns sync iterator
3	ApplicationsOperations.list_tokens async→sync	§8 Pageable	Same
4-16	ApplicationPatchable — 13 instance variables deleted	§11 Flatten	@@Legacy.flattenProperty already applied; properties under properties bag
17-24	JitRequestDefinition — 8 instance variables deleted	§11 Flatten	Same
25	Deleted model AllowedUpgradePlansResult	§8 Pageable Models	Page envelope model
26	Deleted model ManagedIdentityTokenResult	§8 Pageable Models	Same
27-30	ApplicationDefinitionsOperations — 4 *_by_id methods deleted	API version change	Endpoints removed in 2023-12-01-preview
31	Deleted/renamed model JitRequestsOperations	Casing	@@clientLocation uses "jitRequests" (lowercase) generating jitRequestsOperations; spec PR author chose this casing