fix(deps): add rxjs>=7 as peer dependency to custom-esbuild, custom-webpack, and jest (fixes #1863) (#2188)

* fix(deps): add rxjs>=7 as peer dependency to custom-esbuild, custom-webpack, and jest

All three packages import from 'rxjs' directly (switchMap, defer, from, Observable)
but none declared it as a peer dependency. This caused runtime errors when a
consumer project had rxjs@6 installed, which would shadow the v7 brought in
transitively by @angular-devkit/architect.

Fixes #1863

* chore: update yarn.lock with rxjs peer dep entries

Author: just-jeb

packages/custom-esbuild/package.json

@@ -46,6 +46,7 @@
   },
   "peerDependencies": {
     "@angular/compiler-cli": "^21.0.0",
+    "rxjs": ">=7.0.0",
     "vitest": ">=2"
   },
   "devDependencies": {

packages/custom-webpack/package.json

@@ -48,7 +48,8 @@
     "webpack-merge": "^6.0.0"
   },
   "peerDependencies": {
-    "@angular/compiler-cli": "^21.0.0"
+    "@angular/compiler-cli": "^21.0.0",
+    "rxjs": ">=7.0.0"
   },
   "devDependencies": {
     "jest": "30.3.0",

packages/jest/package.json

@@ -52,7 +52,8 @@
     "@angular/compiler-cli": "^21.0.0",
     "@angular/core": "^21.0.0",
     "@angular/platform-browser-dynamic": "^21.0.0",
-    "jest": "^30.0.0"
+    "jest": "^30.0.0",
+    "rxjs": ">=7.0.0"
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",

yarn.lock

@@ -218,6 +218,7 @@ __metadata:
     typescript: 5.9.3
   peerDependencies:
     "@angular/compiler-cli": ^21.0.0
+    rxjs: ">=7.0.0"
     vitest: ">=2"
   languageName: unknown
   linkType: soft
@@ -239,6 +240,7 @@ __metadata:
     webpack-merge: ^6.0.0
   peerDependencies:
     "@angular/compiler-cli": ^21.0.0
+    rxjs: ">=7.0.0"
   languageName: unknown
   linkType: soft
 
@@ -263,6 +265,7 @@ __metadata:
     "@angular/core": ^21.0.0
     "@angular/platform-browser-dynamic": ^21.0.0
     jest: ^30.0.0
+    rxjs: ">=7.0.0"
   languageName: unknown
   linkType: soft