When multiple databases are configured with `clear: true`, command `gen dao` will cleared the previous entity.

[b1lz9]

1. What version of Go and system type/arch are you using?

go version go1.19.1 darwin/arm64

2. What version of GoFrame are you using?

CLI Built Detail:
  Go Version:  go1.17.13
  GF Version:  v2.3.2
  Git Commit:  2023-02-15 14:13:32 ad737ded3cd1354cb6f4208f11fcd8f99f94c5f3
  Build Time:  2023-02-15 14:17:00

3. Can this issue be re-produced with the latest release?

4. What did you do?

This's my config.yaml

gfcli:
  gen:
    dao:
      - link: "mysql:root:12345678@tcp(localhost:3306)/cc_sys"
        tables: ""
        removePrefix: "s_,u_,c_,w_"
        descriptionTag: true
        noModelComment: true
        group: "sys"
        clear: true
        overwriteDao: true
      - link: "mysql:root:12345678@tcp(localhost:3306)/cc_book"
        tables: ""
        removePrefix: ""
        descriptionTag: true
        noModelComment: true
        group: "book"
        clear: true
        overwriteDao: true

I added clear: true to each databaes configuration.

When I use gen dao . Only the entity configured at the bottom will be retained, and all previous ones will be cleard.

5. What did you expect to see?

I hope that even if clear: true is configured for each database, the previous entity will not be cleard.

6. What did you see instead?

[gqcn]

#3301