Fix IndieAuth endpoint requiring incorrectly defined query param (#4183)

* fix(api): remove incorrectly required query param. Fixes #4163

* Commit updated API documentation

---------

Co-authored-by: Owncast <owncast@owncast.online>

webserver/handlers/generated/generated-types.gen.go

@@ -1,6 +1,6 @@
 // Package generated provides primitives to interact with the openapi HTTP API.
 //
-// Code generated by github.com/oapi-codegen/oapi-codegen/v2 version v2.4.1 DO NOT EDIT.
+// Code generated by github.com/oapi-codegen/oapi-codegen/v2 version v2.3.0 DO NOT EDIT.
 package generated
 
 import (
@@ -625,9 +625,6 @@ type AccessToken = string
 // IndieAuthClientId defines model for IndieAuthClientId.
 type IndieAuthClientId = string
 
-// IndieAuthCode defines model for IndieAuthCode.
-type IndieAuthCode = string
-
 // IndieAuthCodeChallenge defines model for IndieAuthCodeChallenge.
 type IndieAuthCodeChallenge = string
 
@@ -803,7 +800,6 @@ type StartIndieAuthFlowParams struct {
 // HandleIndieAuthRedirectParams defines parameters for HandleIndieAuthRedirect.
 type HandleIndieAuthRedirectParams struct {
 	State IndieAuthState `form:"state" json:"state"`
-	Code  IndieAuthCode  `form:"code" json:"code"`
 }
 
 // HandleIndieAuthEndpointGetParams defines parameters for HandleIndieAuthEndpointGet.
@@ -812,7 +808,6 @@ type HandleIndieAuthEndpointGetParams struct {
 	RedirectUri   IndieAuthRedirectURI   `form:"redirect_uri" json:"redirect_uri"`
 	CodeChallenge IndieAuthCodeChallenge `form:"code_challenge" json:"code_challenge"`
 	State         IndieAuthState         `form:"state" json:"state"`
-	Code          IndieAuthCode          `form:"code" json:"code"`
 }
 
 // HandleIndieAuthEndpointPostFormdataBody defines parameters for HandleIndieAuthEndpointPost.