[#23896] Changing the pg-parity flag from --enable_pg_parity_tech_preview to --enable_pg_parity_early_access.

Summary:
Original commit to change this value was incorrectly resolved during a merge conflict resulting in incorrect flag value. Changing the flag
name to --enable_pg_parity_early_access in all the branches.

Test Plan: ./yb_build.sh --java-test 'org.yb.yugabyted.*'

Reviewers: sgarg-yb, djiang

Reviewed By: djiang

Subscribers: yugabyted-dev

Differential Revision: https://phorge.dev.yugabyte.com/D37996

Author: nchandrappa

bin/yugabyted

@@ -7158,9 +7158,9 @@ class ControlScript(object):
 
                     self.configs.saved_data["ca_cert_file_path"] = os.path.join(args.certs_dir,
                                                                                     "ca.crt")
-            if args.enable_pg_parity_tech_preview:
+            if args.enable_pg_parity_early_access:
                 self.configs.temp_data["enable_pg_parity"] = \
-                                args.enable_pg_parity_tech_preview
+                                args.enable_pg_parity_early_access
 
             args.background = self.parse_bool(args.background)
             if args.ui is not None:
@@ -7705,7 +7705,7 @@ class ControlScript(object):
             "--config", help="{} user configuration file path".format(
                               SCRIPT_NAME), metavar="")
             cur_parser.add_argument(
-                "--enable_pg_parity_tech_preview", help="Enable PostgreSQL compatibility features."
+                "--enable_pg_parity_early_access", help="Enable PostgreSQL compatibility features."
                 " Default value is False.", action="store_true", default=False)
 
             # Hidden commands for development/advanced users

java/yb-yugabyted/src/test/java/org/yb/yugabyted/TestYugabytedPgParity.java

@@ -38,7 +38,7 @@ public TestYugabytedPgParity() {
 
         clusterConfigurations = new ArrayList<>();
         Map<String, String> yugabytedFlags = new HashMap<>();
-        yugabytedFlags.put("enable_pg_parity_tech_preview", "");
+        yugabytedFlags.put("enable_pg_parity_early_access", "");
 
         for (int i = 0; i < clusterParameters.numNodes; i++) {
             MiniYugabytedNodeConfigurations nodeConfigurations =