Fix ResolveIssue -> FixIssue in steps module (#1200)

Author: CTY-git

patchwork/steps/__init__.py

@@ -75,6 +75,7 @@
     "ExtractModelResponse",
     "ExtractPackageManagerFile",
     "FilterBySimilarity",
+    "FixIssue",
     "GenerateCodeRepositoryEmbeddings",
     "GenerateEmbeddings",
     "LLM",
@@ -91,7 +92,6 @@
     "ReadPRDiffs",
     "ReadPRDiffsPB",
     "ReadPRs",
-    "ResolveIssue",
     "ScanDepscan",
     "ScanSemgrep",
     "ScanSonar",