Improve the joint model validation for Drawing documents to ensure that they have either visible text, visible fill, or visible lines.

[Fyorl]

Originally reported by Skimble#8601 https://discord.com/channels/170995199584108546/956306859491471420/992195364079804559

ALL MODULES DISABLED? (true)
OS, Hosting, Browser (if applicable): Windows 10, Electron, self-hosted
Short Description of bug: Text drawings that were previously valid that had Fill type of Solid but Opacity of 0 are no longer valid and won't be loaded on opening a scene.
However, the drawing edit dialog will allow the user to set fill to Solid and Opacity to 0, causing an error to immediately be thrown.
This change in validation is causing many of my current scenes to have missing text annotations, where the fill type was set to Solid and Opacity 0.
Simple steps to reproduce the bug: Create a text drawing. Set its fill type to Solid. Change opacity to 0 and note how this throws a validation error. Or, load an existing scene with text drawings that are set to fill type Solid with 0 opacity and observe the scheme validation error and lack of those drawings being visible within the scene.
Screenshots and/or console errors:

commons.js:2774 Error: Failed to initialized Drawing [E5CO22xW9paa1n0z] in Scene [vP8HnlIFFfTUTCoO]: Model Validation Error:
Drawings with a solid or pattern fill must have a non-zero fill alpha.
    at DrawingDocument.validate (commons.js:4742:21)
    at new DataModel (commons.js:4511:26)
    at new Document (commons.js:5026:7)
    at new BaseDrawing (commons.js:7434:3)
    at new ClientDocumentMixin (foundry.js:12262:5)
    at new <anonymous> (foundry.js:11435:5)
    at new DrawingDocument (foundry.js:18110:1)
    at #initialize (commons.js:2770:17)
    at new EmbeddedCollection (commons.js:2732:23)
    at Scene._initialize (commons.js:4651:32)
    at Scene._initialize (foundry.js:12296:11)
    at new DataModel (commons.js:4512:12)
    at new Document (commons.js:5026:7)
    at new BaseScene (commons.js:8754:3)
    at new ClientDocumentMixin (foundry.js:12262:5)
    at new Scene (foundry.js:19580:1)
    at Scene.fromSource (commons.js:4935:14)
    at Scenes._initialize (foundry.js:13045:34)
    at new DocumentCollection (foundry.js:13031:10)
    at new WorldCollection (foundry.js:13274:1)
    at new Scenes (foundry.js:14516:1)
    at Game.initializeDocuments (foundry.js:7207:30)
    at Game.setupGame (foundry.js:7128:10)
    at async Game._initializeGameView (foundry.js:8163:5)