Improve versification warnings for invalid chapters and verses

[pmachapman]

Second part of fix for sillsdev/machine#372. Requires sillsdev/machine#381 (the CI will fail until that PR is merged).

Example warnings:

warnings: [
  "Invalid chapter number error in project TEA at “MAN 1.” (parallel corpus 69893d8434467c056f3542e5, monolingual corpus 69893d8334467c056f3542e1)",
  "Invalid verse number error in project TEA at “LAO 1:v1” (parallel corpus 69893d8434467c056f3542e5, monolingual corpus 69893d8334467c056f3542e1)"
]

---

This change is 

[Enkidu93]

If we can add an expected ref on the machine side, that'll need to be added here as well; otherwise,

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[ddaspit]

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