feat(wrapper-generator): complete v1.0 request-body binding

[Joywambui-maina]

Changes proposed in this pull request

• Replace primitive-only request-body extraction with exhaustive property classification for the operations the WrapperGenerator emits.
• Bind referenced Kiota models, enums, collections, formatted scalar types, nullable references, and numeric INF/NaN unions using their generated Kiota member types.
• Bind schema-less properties as object and convert them to Kiota UntypedValue instances during assignment.
• Replace the generated -Password and -ForceChangePasswordNextSignIn parameters with the published -PasswordProfile model parameter.
• Preserve the published SDK's null-omission behavior for untyped values.
• Add independent omission, coverage, inventory, compilation, and runtime-conversion gates.
• Document the supported mappings, exclusion policies, scope boundary, and retained zero-population classifications.

Scope

This changes property binding only for operations that already generate. It does not add support for skipped actions, functions, unsupported path segments, or operations without a named request entity.

The operation-inventory gate verifies that this change does not alter which operations generate.

Validation

• 148 WrapperGenerator tests pass.
• All 38 v1.0 KiotaCompat specifications were measured.
• The omission oracle reports zero failures across 2,214 generated body-writing cmdlets.
• The coverage sweep reports zero unbound properties among operations that generate.
• All 35 modules that produce wrapper manifests build and import successfully.
• Runtime checks cover typed models, enums, Kiota Date, and 19 schema-less value-conversion cases.
• The generated operation inventory is unchanged by the body-binding work.

Dependency

This PR is intentionally based on feature/wrapper-module-packaging so reviewers see only the 24 files belonging to request-body binding. After #3698 merges into powershell-v3, this PR will be retargeted to powershell-v3.

Closes #3707