Ensure that the user should be able to change the start value of the existing sequence. Fixes #5855

docs/en_US/release_notes_4_27.rst

@@ -35,6 +35,7 @@ Bug fixes
 | `Issue #5841 <https://redmine.postgresql.org/issues/5841>`_ -  Fixed an issue where the server is not able to connect using the service.
 | `Issue #5843 <https://redmine.postgresql.org/issues/5843>`_ -  Fixed an issue where the 'PARALLEL UNSAFE' option is missing from reverse engineering SQL of function/procedure.
 | `Issue #5845 <https://redmine.postgresql.org/issues/5845>`_ -  Fixed an issue where the query tool is not fetching more than 1000 rows for the table does not have any primary key.
+| `Issue #5855 <https://redmine.postgresql.org/issues/5855>`_ -  Ensure that the user should be able to change the start value of the existing sequence.
 | `Issue #5861 <https://redmine.postgresql.org/issues/5861>`_ -  Ensure that the 'Remove Server' option should be visible in the context menu.
 | `Issue #5867 <https://redmine.postgresql.org/issues/5867>`_ -  Fixed an issue where some properties are not being updated correctly for the shared server.
 | `Issue #5885 <https://redmine.postgresql.org/issues/5885>`_ -  Fixed an issue where the user is unable to change the macro name.

web/pgadmin/browser/server_groups/servers/databases/schemas/sequences/static/js/sequence.js

@@ -143,10 +143,7 @@ define('pgadmin.node.sequence', [
           mode: ['properties', 'create', 'edit'], group: gettext('Definition'),
         },{
           id: 'start', label: gettext('Start'), type: 'int',
-          mode: ['properties', 'create'], group: gettext('Definition'),
-          readonly: function(m) {
-            return !m.isNew();
-          },
+          mode: ['properties', 'create', 'edit'], group: gettext('Definition'),
         },{
           id: 'minimum', label: gettext('Minimum'), type: 'int',
           mode: ['properties', 'create', 'edit'], group: gettext('Definition'),