fix: remove declare modifier from ambient namespace in index.d.ts (#1254)

* Initial plan

* fix: remove declare modifier in ambient namespace context in index.d.ts

Co-authored-by: uNetworkingAB <110806833+uNetworkingAB@users.noreply.github.com>
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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: uNetworkingAB <110806833+uNetworkingAB@users.noreply.github.com>

Author: Copilot

docs/index.d.ts

@@ -459,7 +459,7 @@ export var DEDICATED_DECOMPRESSOR: CompressOptions;
  */
 export namespace EnvironmentVariables {
     /** Maximum total byte size of HTTP request headers. This is a runtime env variable. Default: 4096. */
-    declare const UWS_HTTP_MAX_HEADERS_SIZE: string | undefined;
+    const UWS_HTTP_MAX_HEADERS_SIZE: string | undefined;
     /** Maximum number of HTTP request headers. This is a compile-time define, not a runtime env variable. Default: 100. */
-    declare const UWS_HTTP_MAX_HEADERS_COUNT: string | undefined;
+    const UWS_HTTP_MAX_HEADERS_COUNT: string | undefined;
 }