fix(@angular/cli): update ng update output for Angular packages

With #21986 we now error when updating `@angular/` and `@nguniversal/` packages across multiple major versions. With this change we update `ng update` output to show the correct instructions.

Before
```
$ ng update --next

 We analyzed your package.json, there are some packages to update:

      Name                               Version                  Command to update
     --------------------------------------------------------------------------------
      @angular/cli                       12.2.12 -> 13.0.0-rc.2   ng update @angular/cli --next
      @angular/core                      11.2.14 -> 13.0.0-rc.2   ng update @angular/core --next
```

Now
```
$ ng update --next

 We analyzed your package.json, there are some packages to update:

      Name                               Version                  Command to update
     --------------------------------------------------------------------------------
      @angular/cli                       12.2.12 -> 13.0.0-rc.2   ng update @angular/cli --next
      @angular/core                      11.2.14 -> 12.2.9        ng update @angular/core@12
```

Closes #19381

(cherry picked from commit 9b32066)

Author: alan-agius4

packages/schematics/update/update/index.ts

@@ -459,10 +459,39 @@ function _usageMessage(
   const packageGroups = new Map<string, string>();
   const packagesToUpdate = [...infoMap.entries()]
     .map(([name, info]) => {
-      const tag = options.next
-        ? (info.npmPackageJson['dist-tags']['next'] ? 'next' : 'latest') : 'latest';
-      const version = info.npmPackageJson['dist-tags'][tag];
-      const target = info.npmPackageJson.versions[version];
+      let tag = options.next
+        ? info.npmPackageJson['dist-tags']['next']
+          ? 'next'
+          : 'latest'
+        : 'latest';
+      let version = info.npmPackageJson['dist-tags'][tag];
+      let target = info.npmPackageJson.versions[version];
+
+      const versionDiff = semver.diff(info.installed.version, version);
+      if (
+        versionDiff !== 'patch' &&
+        versionDiff !== 'minor' &&
+        /^@(?:angular|nguniversal)\//.test(name)
+      ) {
+        const installedMajorVersion = semver.parse(info.installed.version)?.major;
+        const toInstallMajorVersion = semver.parse(version)?.major;
+        if (
+          installedMajorVersion !== undefined &&
+          toInstallMajorVersion !== undefined &&
+          installedMajorVersion < toInstallMajorVersion - 1
+        ) {
+          const nextMajorVersion = `${installedMajorVersion + 1}.`;
+          const nextMajorVersions = Object.keys(info.npmPackageJson.versions)
+            .filter((v) => v.startsWith(nextMajorVersion))
+            .sort((a, b) => (a > b ? -1 : 1));
+
+          if (nextMajorVersions.length) {
+            version = nextMajorVersions[0];
+            target = info.npmPackageJson.versions[version];
+            tag = '';
+          }
+        }
+      }
 
       return {
         name,
@@ -496,7 +525,9 @@ function _usageMessage(
       }
 
       let command = `ng update ${name}`;
-      if (tag == 'next') {
+      if (!tag) {
+        command += `@${semver.parse(version)?.major || version}`;
+      } else if (tag == 'next') {
         command += ' --next';
       }