refactor: Remove obsolete hasUnsavedChanges logic

It used to check if the last saved version of the document is older than
the current version. But `document.currentVersion` no longer exists in
the backend response, so this didn't work since quite some time.

Signed-off-by: Jonas <jonas@freesources.org>

Author: mejo-

src/components/Editor.vue

@@ -642,7 +642,7 @@ export default {
 				this.emit('ready')
 			}
 			if (Object.prototype.hasOwnProperty.call(state, 'dirty')) {
-				// ignore initial loading and other automated changes
+				// ignore initial loading and other automated changes before first user change
 				if (this.$editor
 					&& (this.$editor.can().undo() || this.$editor.can().redo())
 				) {

src/components/Editor/Status.vue

@@ -86,22 +86,19 @@ export default {
 			return this.dirtyStateIndicator ? t('text', 'Saving …') : t('text', 'Saved')
 		},
 		dirtyStateIndicator() {
-			return this.dirty || this.hasUnsavedChanges
+			return this.dirty
 		},
 		lastSavedStatusTooltip() {
 			let message = t('text', 'Last saved {lastSave}', { lastSave: this.lastSavedString })
 			if (this.hasSyncCollission) {
 				message = t('text', 'The document has been changed outside of the editor. The changes cannot be applied.')
 			}
-			if (this.dirty || this.hasUnsavedChanges) {
+			if (this.dirty) {
 				message += ' - ' + t('text', 'Unsaved changes')
 			}
 			return message
 		},
 
-		hasUnsavedChanges() {
-			return this.document && this.document.lastSavedVersion < this.document.currentVersion
-		},
 		hasSyncCollission() {
 			return this.syncError && this.syncError.type === ERROR_TYPE.SAVE_COLLISSION
 		},

src/services/SyncService.js

@@ -218,6 +218,7 @@ class SyncService {
 						this.emit('error', { type: ERROR_TYPE.PUSH_FORBIDDEN, data: {} })
 					}
 					// TODO: does response.data ever have a document? maybe for errors?
+					// TODO: `currentVersion` is always 0 nowadays. Check if this is still needed.
 					// Only emit conflict event if we have synced until the latest version
 					if (response.data.document?.currentVersion === this.version) {
 						this.emit('error', { type: ERROR_TYPE.PUSH_FAILURE, data: {} })