fix(misc): ignore .nx/workspace-data when generating new workspaces (#26378)

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Fixes #

packages/workspace/src/generators/new/files-integrated-repo/__dot__gitignore

@@ -38,4 +38,5 @@ testem.log
 .DS_Store
 Thumbs.db
 
-.nx/cache
+.nx/cache
+.nx/workspace-data

packages/workspace/src/generators/new/files-package-based-repo/__dot__gitignore

@@ -39,3 +39,4 @@ testem.log
 Thumbs.db
 
 .nx/cache
+.nx/workspace-data

packages/workspace/src/generators/new/files-root-app/__dot__gitignore

@@ -38,4 +38,5 @@ testem.log
 .DS_Store
 Thumbs.db
 
-.nx/cache
+.nx/cache
+.nx/workspace-data