fix(theme): guard against unknown parameter in values to prevent crash (#1360)

Parameters with non-OAS3 `in` values (e.g. `formData` from OAS2 specs)
would cause a page crash since the params map only keys on the four valid
OAS3 locations (path, query, header, cookie). Use optional chaining to
skip unknown values gracefully instead of throwing.

Fixes #1359

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sserrata

packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/Request/index.tsx

@@ -102,7 +102,7 @@ function Request({ item }: { item: ApiItem }) {
     (param: { in: "path" | "query" | "header" | "cookie" }) => {
       const paramType = param.in;
       const paramsArray: ParameterObject[] = paramsObject[paramType];
-      paramsArray.push(param as ParameterObject);
+      paramsArray?.push(param as ParameterObject);
     }
   );
 

packages/docusaurus-theme-openapi-docs/src/theme/ApiItem/index.tsx

@@ -122,7 +122,7 @@ export default function ApiItem(props: Props): JSX.Element {
       (param: { in: "path" | "query" | "header" | "cookie" }) => {
         const paramType = param.in;
         const paramsArray: ParameterObject[] = params[paramType];
-        paramsArray.push(param as ParameterObject);
+        paramsArray?.push(param as ParameterObject);
       }
     );
     const auth = createAuth({