fix(drizzle): skip column if undefined in findMany (#12902)
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### What?
### Why?
### How?
Fixes #
-->
### What?
This PR fixes an issue where sorting on a traditional virtual field with
`virtual: true` while using a drizzle-based db adapter would cause a
runtime error.
### Why?
To skip attempting to sort virtual fields which are not linked to a
relationship/upload and prevent a runtime error from surfacing.
### How?
Skipping the deletion of the property from the `selectFields` object if
the column is false-y.
Fixes #12886
Before:
[sort-virtualfield-drizzle-error.mp4](https://private-user-images.githubusercontent.com/78685728/457602747-b8661e47-a1a8-4453-b2ec-b7e7199b9846.mp4?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NTA2OTU0NzksIm5iZiI6MTc1MDY5NTE3OSwicGF0aCI6Ii83ODY4NTcyOC80NTc2MDI3NDctYjg2NjFlNDctYTFhOC00NDUzLWIyZWMtYjdlNzE5OWI5ODQ2Lm1wND9YLUFtei1BbGdvcml0aG09QVdTNC1ITUFDLVNIQTI1NiZYLUFtei1DcmVkZW50aWFsPUFLSUFWQ09EWUxTQTUzUFFLNFpBJTJGMjAyNTA2MjMlMkZ1cy1lYXN0LTElMkZzMyUyRmF3czRfcmVxdWVzdCZYLUFtei1EYXRlPTIwMjUwNjIzVDE2MTI1OVomWC1BbXotRXhwaXJlcz0zMDAmWC1BbXotU2lnbmF0dXJlPTE3NmMzOWI5YjNiNzEwYzk3ZWUyNDllYTBjMzZkNzkzMjhjNzc5YzJhNDlkOTBiNDk5MDFhMTdmNDA4NjJhZWQmWC1BbXotU2lnbmVkSGVhZGVycz1ob3N0In0.N1GJsiI_gZ8M54VHCAmiPEhcJGqRw3Ucy-VeM5R7UFE)
After:
[virtualfields-sort-Posts---Payload.webm](https://github.com/user-attachments/assets/f5a15d98-4a40-4817-bc6a-415f3ec27484)
<details>
<summary>Collection config used above</summary>
```ts
export const PostsCollection: CollectionConfig = {
slug: postsSlug,
admin: {
useAsTitle: 'title',
defaultColumns: ['title', 'exampleField'],
},
fields: [
{
name: 'title',
type: 'text',
},
{
name: 'exampleField',
type: 'text',
virtual: true,
admin: {
readOnly: true,
},
hooks: {
afterRead: [({ data }) => data?.title],
},
},
{
type: 'relationship',
name: 'category',
relationTo: 'categories',
},
{
name: 'categoryTitle',
type: 'text',
virtual: 'category.title',
},
],
}
```
</details>
---------
Co-authored-by: Sasha <64744993+r1tsuu@users.noreply.github.com>
605c993bb7