fix: union matching Terraform; multipart/formdata string arrays Typescript/MCP; infer union discriminators; (#1726)

- fix(terraform): Account for discriminator mapping when matching union
members
- fix(typescript,mcp): Properly encode string arrays in
multipart/formdata
- feat(all): infer union discriminators

Author: 2ynn

go.mod

@@ -39,7 +39,7 @@ require (
 	github.com/speakeasy-api/huh v1.1.2
 	github.com/speakeasy-api/jq v0.1.1-0.20251107233444-84d7e49e84a4
 	github.com/speakeasy-api/openapi v1.11.0
-	github.com/speakeasy-api/openapi-generation/v2 v2.762.0
+	github.com/speakeasy-api/openapi-generation/v2 v2.763.2
 	github.com/speakeasy-api/openapi-overlay v0.10.3
 	github.com/speakeasy-api/sdk-gen-config v1.42.0
 	github.com/speakeasy-api/speakeasy-client-sdk-go/v3 v3.26.7

go.sum

@@ -553,8 +553,8 @@ github.com/speakeasy-api/libopenapi v0.21.9-fixhiddencomps-fixed h1:PL/kpBY5vkBm
 github.com/speakeasy-api/libopenapi v0.21.9-fixhiddencomps-fixed/go.mod h1:Gc8oQkjr2InxwumK0zOBtKN9gIlv9L2VmSVIUk2YxcU=
 github.com/speakeasy-api/openapi v1.11.0 h1:Hzr1zuXDtdJa+YLGw8ZMM6i19V4T3V5L8T5K8JUZ8gg=
 github.com/speakeasy-api/openapi v1.11.0/go.mod h1:JnmVyPKhAhwTup7/jKYpnv2B0O2Lm3C+cjpVZKieVvk=
-github.com/speakeasy-api/openapi-generation/v2 v2.762.0 h1:VzF8HQxFZQoT0HHxwVnOOgxKiRkIvaWPWiItHuKhGfs=
-github.com/speakeasy-api/openapi-generation/v2 v2.762.0/go.mod h1:BFcupAsPG9V10q1DGDI+Uslajq2WcYtRFn4IP4vFYSk=
+github.com/speakeasy-api/openapi-generation/v2 v2.763.2 h1:iM2LvCuUzjPf8rDL+n32bA8G3I4rCjdpU46aQJlRzm0=
+github.com/speakeasy-api/openapi-generation/v2 v2.763.2/go.mod h1:BFcupAsPG9V10q1DGDI+Uslajq2WcYtRFn4IP4vFYSk=
 github.com/speakeasy-api/openapi-overlay v0.10.3 h1:70een4vwHyslIp796vM+ox6VISClhtXsCjrQNhxwvWs=
 github.com/speakeasy-api/openapi-overlay v0.10.3/go.mod h1:RJjV0jbUHqXLS0/Mxv5XE7LAnJHqHw+01RDdpoGqiyY=
 github.com/speakeasy-api/sdk-gen-config v1.42.0 h1:L8S8wNQvJP/VlQH4sboC32JNx5uiZ8yQ1WdJCBOi9Yg=