fix(install): cache jsr deps from all workspace config files (#26779)

Fixes #26772.

I wasn't aware that the `imports()` method only returned the workspace
root imports

cli/tools/registry/pm/cache_deps.rs

@@ -44,7 +44,11 @@ pub async fn cache_top_level_deps(
 
     let mut seen_reqs = std::collections::HashSet::new();
 
-    for entry in import_map.imports().entries() {
+    for entry in import_map.imports().entries().chain(
+      import_map
+        .scopes()
+        .flat_map(|scope| scope.imports.entries()),
+    ) {
       let Some(specifier) = entry.value else {
         continue;
       };

tests/specs/install/installs_all_workspace_imports/__test__.jsonc

@@ -0,0 +1,9 @@
+{
+  "tempDir": true,
+  "steps": [
+    {
+      "args": "install",
+      "output": "install.out"
+    }
+  ]
+}

tests/specs/install/installs_all_workspace_imports/deno.json

@@ -0,0 +1,6 @@
+{
+  "workspace": ["packages/foo", "packages/bar"],
+  "imports": {
+    "@denotest/subtract": "jsr:@denotest/subtract@^1.0.0"
+  }
+}

tests/specs/install/installs_all_workspace_imports/install.out

@@ -0,0 +1,10 @@
+[UNORDERED_START]
+Download http://localhost:4260/@denotest%2fesm-basic
+Download http://localhost:4260/@denotest/esm-basic/1.0.0.tgz
+Download http://127.0.0.1:4250/@denotest/subtract/meta.json
+Download http://127.0.0.1:4250/@denotest/add/meta.json
+Download http://127.0.0.1:4250/@denotest/add/1.0.0_meta.json
+Download http://127.0.0.1:4250/@denotest/subtract/1.0.0_meta.json
+Download http://127.0.0.1:4250/@denotest/add/1.0.0/mod.ts
+Download http://127.0.0.1:4250/@denotest/subtract/1.0.0/mod.ts
+[UNORDERED_END]

tests/specs/install/installs_all_workspace_imports/packages/bar/deno.json

@@ -0,0 +1,5 @@
+{
+  "imports": {
+    "@denotest/esm-basic": "npm:@denotest/esm-basic@^1.0.0"
+  }
+}

tests/specs/install/installs_all_workspace_imports/packages/foo/deno.json

@@ -0,0 +1,5 @@
+{
+  "imports": {
+    "@denotest/add": "jsr:@denotest/add@^1.0.0"
+  }
+}