Python: Treat all .dev versions as local dev builds, not just .dev0

CI builds produce timestamped versions like 8.75.0.dev20260227100441
which are also not published to PyPI. Use .contains(".dev") instead
of .endsWith(".dev0") to catch all PEP 440 dev versions.

Author: knutwannheden

rewrite-python/src/main/java/org/openrewrite/python/rpc/PythonRewriteRpc.java

@@ -539,7 +539,7 @@ public Builder pythonVersion(String pythonVersion) {
         public PythonRewriteRpc get() {
             String version = StringUtils.readFully(
                     PythonRewriteRpc.class.getResourceAsStream("/META-INF/rewrite-python-version.txt")).trim();
-            boolean isDevBuild = version.isEmpty() || version.endsWith(".dev0") || "unspecified".equals(version);
+            boolean isDevBuild = version.isEmpty() || version.contains(".dev") || "unspecified".equals(version);
 
             Path resolvedPipPackagesPath = null;
             if (!isDevBuild) {