refactor(server): rename CompositePlugin -> CompositeHandlerPlugin (#268)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Refactor**
- Refined the internal plugin structure for improved consistency and
maintainability.
- **Tests**
- Updated test cases to align with the internal enhancements, ensuring
proper plugin initialization and reliable system behavior.

These updates optimize the backend processes without changing any
functionality visible to end-users.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: dinwwwh

packages/server/src/adapters/standard/handler.ts

@@ -8,7 +8,7 @@ import type { Router } from '../../router'
 import type { StandardCodec, StandardMatcher } from './types'
 import { ORPCError, toORPCError } from '@orpc/client'
 import { intercept, trim } from '@orpc/shared'
-import { CompositePlugin } from '../../plugins'
+import { CompositeHandlerPlugin } from '../../plugins'
 import { createProcedureClient } from '../../procedure-client'
 
 export type StandardHandleOptions<T extends Context> =
@@ -46,15 +46,15 @@ export interface StandardHandlerOptions<TContext extends Context> {
 }
 
 export class StandardHandler<T extends Context> {
-  private readonly plugin: CompositePlugin<T>
+  private readonly plugin: CompositeHandlerPlugin<T>
 
   constructor(
     router: Router<any, T>,
     private readonly matcher: StandardMatcher,
     private readonly codec: StandardCodec,
     private readonly options: NoInfer<StandardHandlerOptions<T>>,
   ) {
-    this.plugin = new CompositePlugin(options.plugins)
+    this.plugin = new CompositeHandlerPlugin(options.plugins)
 
     this.plugin.init(this.options)
     this.matcher.init(router)

packages/server/src/plugins/base.test.ts

@@ -1,11 +1,11 @@
-import { CompositePlugin } from './base'
+import { CompositeHandlerPlugin } from './base'
 
-it('compositePlugin', () => {
+it('compositeHandlerPlugin', () => {
   const plugin1 = { init: vi.fn() }
   const plugin2 = {}
   const plugin3 = { init: vi.fn() }
 
-  const composite = new CompositePlugin([plugin1, plugin2, plugin3])
+  const composite = new CompositeHandlerPlugin([plugin1, plugin2, plugin3])
 
   composite.init('__OPTIONS__' as any)
 

packages/server/src/plugins/base.ts

@@ -5,7 +5,7 @@ export interface HandlerPlugin<TContext extends Context> {
   init?(options: StandardHandlerOptions<TContext>): void
 }
 
-export class CompositePlugin<TContext extends Context> implements HandlerPlugin<TContext> {
+export class CompositeHandlerPlugin<TContext extends Context> implements HandlerPlugin<TContext> {
   constructor(private readonly plugins: HandlerPlugin<TContext>[] = []) {}
 
   init(options: StandardHandlerOptions<TContext>): void {