fix: preserve issue workspace environment selection

Preserve execution workspace environmentId values through normal issue updates so explicit operator selections survive workspace setting serialization and reused workspace metadata sync.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/services/heartbeat.ts

@@ -11108,10 +11108,7 @@ export function heartbeatService(db: Db, options: HeartbeatServiceOptions = {})
         };
       }
       if (Object.keys(nextIssuePatch).length > 0) {
-        await issuesSvc.update(issueId, {
-          ...nextIssuePatch,
-          preserveExecutionWorkspaceEnvironmentId: true,
-        });
+        await issuesSvc.update(issueId, nextIssuePatch);
       }
     }
     if (persistedExecutionWorkspace) {

server/src/services/issues.ts

@@ -6167,7 +6167,6 @@ export function issueService(db: Db) {
         blockedByIssueIds?: string[];
         actorAgentId?: string | null;
         actorUserId?: string | null;
-        preserveExecutionWorkspaceEnvironmentId?: boolean;
       },
       dbOrTx: any = db,
     ) => {
@@ -6183,7 +6182,6 @@ export function issueService(db: Db) {
         blockedByIssueIds,
         actorAgentId,
         actorUserId,
-        preserveExecutionWorkspaceEnvironmentId,
         ...issueData
       } = data;
       const isolatedWorkspacesEnabled = (await instanceSettings.getExperimental()).enableIsolatedWorkspaces;
@@ -6248,11 +6246,11 @@ export function issueService(db: Db) {
         issueData.executionWorkspaceSettings !== undefined
           ? parseIssueExecutionWorkspaceSettings(
               issueData.executionWorkspaceSettings,
-              { includeEnvironmentId: preserveExecutionWorkspaceEnvironmentId === true },
+              { includeEnvironmentId: true },
             )
           : parseIssueExecutionWorkspaceSettings(
               existing.executionWorkspaceSettings,
-              { includeEnvironmentId: preserveExecutionWorkspaceEnvironmentId === true },
+              { includeEnvironmentId: true },
             );
       if (issueData.executionWorkspaceSettings !== undefined) {
         patch.executionWorkspaceSettings = nextExecutionWorkspaceSettings