🐛 [BUG]Attempted import error: 'Version' is not exported from '@antv/l7-maps'.

### 🐛 Bug description [Please make everyone to understand it]

> Please provide a link by forking these links [G2Plot](https://codesandbox.io/s/g2plot-issue-template-gzfdq?file=/index.ts) or GitHub repo, a minimal reproduction.

* _Required_ **Link to minimal reproduction**:

### 📷 Step to reproduce

### 🏞 Expected result

### 🚑 Any additional [like screenshots]

* **G2Plot Version**:
* **Platform**:

Start by reproducing the attempted Version import error from @antv/l7-maps in the G2Plot issue template or a minimal reproduction. The issue does not name a source file or test, so first locate the import and verify the package's available exports; done means the import no longer fails and the reproduction builds successfully.

Written by the indexing model from the issue text.