[O2B-1491] Remove 'MIXED' status and filtering by 'UNKNOWN'

As a result of PR comments removed the status mixed from possible statuses ENUM.

Also removed filtering by the 'UNKNOWN' status given it is an unreachable status.

Author: isaachilly

lib/domain/enums/StatusAcronyms.js

@@ -18,7 +18,6 @@ const statusAcronyms = Object.freeze({
     CONFIGURED: 'C',
     RUNNING: 'R',
     ERROR: 'E',
-    MIXED: 'M',
     DESTROYED: 'X',
     DONE: 'X',
 });

lib/public/domain/enums/statusAcronym.mjs

@@ -18,7 +18,6 @@ export const StatusAcronym = Object.freeze({
     CONFIGURED: 'C',
     RUNNING: 'R',
     ERROR: 'E',
-    MIXED: 'M',
     DESTROYED: 'X',
     DONE: 'X',
 });

lib/public/views/Environments/Overview/EnvironmentOverviewModel.js

@@ -37,7 +37,7 @@ export class EnvironmentOverviewModel extends OverviewPageModel {
                     value: status,
                     label: coloredEnvironmentStatusComponent(status),
                     rawLabel: status,
-                })).concat({ value: 'UNKNOWN', label: coloredEnvironmentStatusComponent('UNKNOWN'), rawLabel: 'UNKNOWN' }),
+                })),
             }),
             ids: new RawTextFilterModel(),
         });

lib/usecases/environment/GetAllEnvironmentsUseCase.js

@@ -26,21 +26,18 @@ const { statusAcronyms } = require('../../domain/enums/StatusAcronyms.js');
  * Subquery to select the latest history item for each environment.
  * It orders the history items by updatedAt DESC and selects to have the latests
  * history item on top. Then it limits the result to 1, so only
- * the latest history item is selected. If the environment has no history
- * items, it returns 'UNKNOWN' to indicate the environment has never had a status.
+ * the latest history item is selected.
  *
  * Environment refers to the current environment in the main query,
  * because this query is a sub query that is executed for every environment.
  */
 const ENVIRONMENT_LATEST_HISTORY_ITEM_SUBQUERY = `
-(CASE 
-    WHEN EXISTS(SELECT 1 FROM environments_history_items AS h WHERE h.environment_id = Environment.id) THEN 
-        (SELECT h.status
-        FROM environments_history_items AS h WHERE h.environment_id = Environment.id
-        ORDER BY h.updated_at DESC
-        LIMIT 1)
-    ELSE 'UNKNOWN'
-END)`;
+(SELECT h.status
+    FROM environments_history_items AS h
+    WHERE h.environment_id = Environment.id
+    ORDER BY h.updated_at DESC
+    LIMIT 1
+)`;
 
 /**
  * Subquery to select the status history for each environment.