Rename Sync2 -> Sync (#26479)

The xorm `Sync2` has already been deprecated in favor of `Sync`,
so let's do the same inside the Gitea codebase.

Command used to replace everything:
```sh
for i in $(ag Sync2 --files-with-matches); do vim $i -c ':%sno/Sync2/Sync/g' -c ':wq'; done
```

models/migrations/v1_10/v100.go

@@ -18,7 +18,7 @@ func UpdateMigrationServiceTypes(x *xorm.Engine) error {
 		OriginalURL         string `xorm:"VARCHAR(2048)"`
 	}
 
-	if err := x.Sync2(new(Repository)); err != nil {
+	if err := x.Sync(new(Repository)); err != nil {
 		return err
 	}
 
@@ -78,5 +78,5 @@ func UpdateMigrationServiceTypes(x *xorm.Engine) error {
 		ExpiresAt         time.Time
 	}
 
-	return x.Sync2(new(ExternalLoginUser))
+	return x.Sync(new(ExternalLoginUser))
 }

models/migrations/v1_10/v101.go

@@ -14,5 +14,5 @@ func ChangeSomeColumnsLengthOfExternalLoginUser(x *xorm.Engine) error {
 		RefreshToken      string `xorm:"TEXT"`
 	}
 
-	return x.Sync2(new(ExternalLoginUser))
+	return x.Sync(new(ExternalLoginUser))
 }

models/migrations/v1_10/v88.go

@@ -21,7 +21,7 @@ func AddCommitStatusContext(x *xorm.Engine) error {
 		Context     string `xorm:"TEXT"`
 	}
 
-	if err := x.Sync2(new(CommitStatus)); err != nil {
+	if err := x.Sync(new(CommitStatus)); err != nil {
 		return err
 	}
 

models/migrations/v1_10/v89.go

@@ -12,7 +12,7 @@ func AddOriginalMigrationInfo(x *xorm.Engine) error {
 		OriginalAuthorID int64
 	}
 
-	if err := x.Sync2(new(Issue)); err != nil {
+	if err := x.Sync(new(Issue)); err != nil {
 		return err
 	}
 
@@ -22,7 +22,7 @@ func AddOriginalMigrationInfo(x *xorm.Engine) error {
 		OriginalAuthorID int64
 	}
 
-	if err := x.Sync2(new(Comment)); err != nil {
+	if err := x.Sync(new(Comment)); err != nil {
 		return err
 	}
 
@@ -31,5 +31,5 @@ func AddOriginalMigrationInfo(x *xorm.Engine) error {
 		OriginalURL string
 	}
 
-	return x.Sync2(new(Repository))
+	return x.Sync(new(Repository))
 }

models/migrations/v1_10/v90.go

@@ -13,5 +13,5 @@ func ChangeSomeColumnsLengthOfRepo(x *xorm.Engine) error {
 		OriginalURL string `xorm:"VARCHAR(2048)"`
 	}
 
-	return x.Sync2(new(Repository))
+	return x.Sync(new(Repository))
 }

models/migrations/v1_10/v91.go

@@ -11,7 +11,7 @@ func AddIndexOnRepositoryAndComment(x *xorm.Engine) error {
 		OwnerID int64 `xorm:"index"`
 	}
 
-	if err := x.Sync2(new(Repository)); err != nil {
+	if err := x.Sync(new(Repository)); err != nil {
 		return err
 	}
 
@@ -21,5 +21,5 @@ func AddIndexOnRepositoryAndComment(x *xorm.Engine) error {
 		ReviewID int64 `xorm:"index"`
 	}
 
-	return x.Sync2(new(Comment))
+	return x.Sync(new(Comment))
 }

models/migrations/v1_10/v93.go

@@ -11,5 +11,5 @@ func AddEmailNotificationEnabledToUser(x *xorm.Engine) error {
 		EmailNotificationsPreference string `xorm:"VARCHAR(20) NOT NULL DEFAULT 'enabled'"`
 	}
 
-	return x.Sync2(new(User))
+	return x.Sync(new(User))
 }

models/migrations/v1_10/v94.go

@@ -11,7 +11,7 @@ func AddStatusCheckColumnsForProtectedBranches(x *xorm.Engine) error {
 		StatusCheckContexts []string `xorm:"JSON TEXT"`
 	}
 
-	if err := x.Sync2(new(ProtectedBranch)); err != nil {
+	if err := x.Sync(new(ProtectedBranch)); err != nil {
 		return err
 	}
 

models/migrations/v1_10/v95.go

@@ -15,5 +15,5 @@ func AddCrossReferenceColumns(x *xorm.Engine) error {
 		RefIsPull    bool
 	}
 
-	return x.Sync2(new(Comment))
+	return x.Sync(new(Comment))
 }

models/migrations/v1_10/v97.go

@@ -10,5 +10,5 @@ func AddRepoAdminChangeTeamAccessColumnForUser(x *xorm.Engine) error {
 		RepoAdminChangeTeamAccess bool `xorm:"NOT NULL DEFAULT false"`
 	}
 
-	return x.Sync2(new(User))
+	return x.Sync(new(User))
 }

models/migrations/v1_10/v98.go

@@ -12,5 +12,5 @@ func AddOriginalAuthorOnMigratedReleases(x *xorm.Engine) error {
 		OriginalAuthorID int64 `xorm:"index"`
 	}
 
-	return x.Sync2(new(Release))
+	return x.Sync(new(Release))
 }

models/migrations/v1_10/v99.go

@@ -34,5 +34,5 @@ func AddTaskTable(x *xorm.Engine) error {
 		Status int `xorm:"NOT NULL DEFAULT 0"`
 	}
 
-	return x.Sync2(new(Task), new(Repository))
+	return x.Sync(new(Task), new(Repository))
 }