fix: don't remove importers from current lockfile

When doing some operations on a subset of workspace
packages, do not remove the not selected packages
from the current lockfile (node_modules/.pnpm-lock.yaml)

packages/supi/src/install/link.ts

@@ -286,7 +286,7 @@ export default async function linkPackages (
     const importers = importerIds.reduce((acc, importerId) => {
       acc[importerId] = newWantedLockfile.importers[importerId]
       return acc
-    }, {})
+    }, opts.currentLockfile.importers)
     currentLockfile = { ...newWantedLockfile, packages, importers }
   } else if (
     opts.include.dependencies &&

packages/supi/test/install/multipleImporters.ts

@@ -123,6 +123,7 @@ test('dependencies of other importers are not pruned when installing for a subse
   await rootNodeModules.has('.localhost+4873/is-negative/1.0.0')
 
   const lockfile = await rootNodeModules.readCurrentLockfile()
+  t.deepEqual(Object.keys(lockfile.importers), ['project-1', 'project-2'])
   t.deepEqual(Object.keys(lockfile.packages), [
     '/is-negative/1.0.0',
     '/is-positive/2.0.0',