Fix staticcheck violations (#13301)

* Fix violations of sa2002

* Fix violations of sa4005

* Fix violations of sa4010

* Fix violations for sa4023

* Comment on commented static checks

BUILD.bazel

@@ -104,7 +104,7 @@ STATICCHECK_ANALYZERS = [
     "sa1016",
     "sa1017",
     "sa1018",
-    # "sa1019",
+    # "sa1019", # TODO: Fix all uses of deprecated things.
     "sa1020",
     "sa1021",
     "sa1023",
@@ -117,7 +117,7 @@ STATICCHECK_ANALYZERS = [
     "sa1030",
     "sa2000",
     "sa2001",
-    # "sa2002",
+    "sa2002",
     "sa2003",
     "sa3000",
     "sa3001",
@@ -125,11 +125,11 @@ STATICCHECK_ANALYZERS = [
     "sa4001",
     "sa4003",
     "sa4004",
-    # "sa4005",
-    # "sa4006",
+    "sa4005",
+    # "sa4006", # TODO: Fix violations of unused arguments.
     "sa4008",
     "sa4009",
-    # "sa4010",
+    "sa4010",
     "sa4011",
     "sa4012",
     "sa4013",
@@ -142,7 +142,7 @@ STATICCHECK_ANALYZERS = [
     "sa4020",
     "sa4021",
     "sa4022",
-    # "sa4023",
+    "sa4023",
     "sa4024",
     "sa4025",
     "sa4026",