fix: force onnxruntime-web@1.18.0 via resolutions to eliminate nested 1.24.3

vad-web's own dependency was resolved to ort@1.24.3 (nested in its
node_modules), which only has threaded WASM requiring a .mjs dynamic
import that Vite fails to serve correctly. Pin ort to 1.18.0 via yarn
resolutions so all packages share the same copy with ort-wasm-simd.wasm
(non-threaded SIMD). Also remove the now-unnecessary COOP/COEP headers.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

yarn.lock

@@ -9643,13 +9643,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"flatbuffers@npm:^25.1.24":
-  version: 25.9.23
-  resolution: "flatbuffers@npm:25.9.23"
-  checksum: 10c0/957c4ae2a02be1703c98b36b4dc8ceb81613cf8e2333026afc95a7b68b088bed5458056dc29d0ab7ce8bc403b8c003732b0968d24aba46f5e7c8f71789a6bd9e
-  languageName: node
-  linkType: hard
-
 "flatted@npm:^3.2.9":
   version: 3.3.1
   resolution: "flatted@npm:3.3.1"
@@ -12061,13 +12054,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"onnxruntime-common@npm:1.24.3":
-  version: 1.24.3
-  resolution: "onnxruntime-common@npm:1.24.3"
-  checksum: 10c0/3160a08a8addf7b1c8f2ff0c12c126c84847d5b36f8c047cf05560d05faf7605fe4c3366c725cfbd305d4399d0930c632a22bd6a600488ac2c6f9ee3e2aebe25
-  languageName: node
-  linkType: hard
-
 "onnxruntime-web@npm:1.18.0":
   version: 1.18.0
   resolution: "onnxruntime-web@npm:1.18.0"
@@ -12082,20 +12068,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"onnxruntime-web@npm:^1.17.0":
-  version: 1.24.3
-  resolution: "onnxruntime-web@npm:1.24.3"
-  dependencies:
-    flatbuffers: "npm:^25.1.24"
-    guid-typescript: "npm:^1.0.9"
-    long: "npm:^5.2.3"
-    onnxruntime-common: "npm:1.24.3"
-    platform: "npm:^1.3.6"
-    protobufjs: "npm:^7.2.4"
-  checksum: 10c0/7975ad03fed7017a84b64e8038187dc52ec383628fd4ac380a9dee628c1aee7959f8398c0ffe3e503b4565d381d9f8ef8863f942386f56ff5ee0915e38f828c3
-  languageName: node
-  linkType: hard
-
 "optionator@npm:^0.9.3":
   version: 0.9.4
   resolution: "optionator@npm:0.9.4"