Change the property names to be lower case letter in the tspCodeModel…

….json (#4331)

Fixes Azure/autorest.csharp#4715

This PR changes the property names for models and enums in the
`tspCodeModel.json` to be lower cases to align convention and the type
definitions in TCGC.
clients and operations are untouched in this PR, we could make follow up
on those later.

packages/http-client-csharp/emitter/src/emitter.ts

@@ -221,8 +221,8 @@ async function execAsync(
 
 function transformJSONProperties(this: any, key: string, value: any): any {
   // convertUsageNumbersToStrings
-  if (this["Kind"] === "model" || this["Kind"] === "enum") {
-    if (key === "Usage" && typeof value === "number") {
+  if (this["kind"] === "model" || this["kind"] === "enum") {
+    if (key === "usage" && typeof value === "number") {
       if (value === 0) {
         return "None";
       }

packages/http-client-csharp/emitter/src/lib/client-model-builder.ts

@@ -10,7 +10,6 @@ import {
   SdkServiceMethod,
   SdkType,
   UsageFlags,
-  getAllModels,
 } from "@azure-tools/typespec-client-generator-core";
 import { getDoc } from "@typespec/compiler";
 import { NetEmitterOptions, resolveOptions } from "../options.js";
@@ -28,9 +27,6 @@ import { fromSdkServiceMethod, getParameterDefaultValue } from "./operation-conv
 import { processServiceAuthentication } from "./service-authentication.js";
 
 export function createModel(sdkContext: SdkContext<NetEmitterOptions>): CodeModel {
-  // initialize tcgc model
-  if (!sdkContext.operationModelsMap) getAllModels(sdkContext);
-
   const sdkPackage = sdkContext.sdkPackage;
 
   const sdkTypeMap: SdkTypeMap = {
@@ -155,9 +151,9 @@ export function createModel(sdkContext: SdkContext<NetEmitterOptions>): CodeMode
       const isEndpoint = parameter.name === endpointVariableName;
       const parameterType: InputType = isEndpoint
         ? {
-            Kind: "url",
-            Name: "url",
-            CrossLanguageDefinitionId: "TypeSpec.url",
+            kind: "url",
+            name: "url",
+            crossLanguageDefinitionId: "TypeSpec.url",
           }
         : fromSdkType(parameter.type, sdkContext, sdkTypeMap); // TODO: consolidate with converter.fromSdkEndpointType
       parameters.push({