fix(UT): remove legacy column from identifier. ref: #30243 (#30244)

During the migration of customers from another database engine to
Postgres, a column was inadvertently left behind. This oversight has
resulted in 404 errors because in Postgres, the column is interpreted as
a function, not a column.

Added a note in the MainSuite2a since it lasts twice than other suites.

dotCMS/src/main/java/com/dotmarketing/startup/runonce/Task241013RemoveFullPathLcColumnFromIdentifier.java

@@ -0,0 +1,60 @@
+package com.dotmarketing.startup.runonce;
+
+import com.dotmarketing.common.db.DotConnect;
+import com.dotmarketing.common.db.DotDatabaseMetaData;
+import com.dotmarketing.exception.DotDataException;
+import com.dotmarketing.exception.DotRuntimeException;
+import com.dotmarketing.startup.StartupTask;
+import com.dotmarketing.util.Logger;
+
+import java.sql.SQLException;
+
+/**
+ * This task removes the full_path_lc column from the identifier table and creates the full_path_lc function
+ * if it doesn't exist. It also creates an index on the identifier table.
+ */
+public class Task241013RemoveFullPathLcColumnFromIdentifier implements StartupTask {
+
+    private static final String DROP_FULL_PATH_LC_COLUMN = "ALTER TABLE identifier DROP COLUMN full_path_lc;";
+
+    private static final String CREATE_FULL_PATH_LC_FUNCTION =
+            "CREATE OR REPLACE FUNCTION full_path_lc(identifier) RETURNS text\n"
+                    + "    AS ' SELECT CASE WHEN $1.parent_path = ''/System folder'' then ''/'' else LOWER($1.parent_path || $1.asset_name) end; '\n"
+                    + "LANGUAGE SQL;\n";
+
+    protected static final String DROP_INDEX = "DROP INDEX IF EXISTS idx_ident_uniq_asset_name CASCADE";
+
+    private static final String CREATE_INDEX = "CREATE UNIQUE INDEX idx_ident_uniq_asset_name on identifier (full_path_lc(identifier),host_inode)";
+
+    /**
+     * Checks if the full_path_lc column exists in the identifier table
+     * @return true if the column does exist, false otherwise
+     */
+    @Override
+    public boolean forceRun() {
+        try {
+            return new DotDatabaseMetaData().hasColumn("identifier", "full_path_lc") ;
+        } catch (SQLException e) {
+            Logger.error(this, e.getMessage(),e);
+            return false;
+        }
+    }
+
+    @Override
+    public void executeUpgrade() throws DotDataException, DotRuntimeException {
+        final DotConnect dc = new DotConnect();
+        try {
+            //Removes full_path_lc column from identifier table
+            dc.executeStatement(DROP_FULL_PATH_LC_COLUMN);
+
+            //Creates full_path_lc function if it doesn't exist
+            dc.executeStatement(CREATE_FULL_PATH_LC_FUNCTION);
+
+            //Creates index on identifier table
+            dc.executeStatement(DROP_INDEX);
+            dc.executeStatement(CREATE_INDEX);
+        } catch (SQLException e) {
+            throw new DotDataException(e.getMessage(), e);
+        }
+    }
+}