+semver:minor Add PalasoImage robust helper default overrides (BL-16221)

[andrew-polk]

And expand the exception types which are retried

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This change is 

[devin-ai-integration]

✅ Devin Review: No Issues Found

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Palaso Tests

     4 files  ±0       4 suites  ±0   9m 46s ⏱️ -50s
 5 095 tests ±0   4 862 ✅ +1  233 💤  - 1  0 ❌ ±0 
16 597 runs  ±0  15 878 ✅ +2  719 💤  - 2  0 ❌ ±0 

Results for commit 62b2ae5. ± Comparison against base commit 40289d1.

[tombogle]

@tombogle reviewed 3 files and all commit messages, and made 1 comment.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on andrew-polk).

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SIL.Windows.Forms/ImageToolbox/PalasoImage.cs line 377 at r1 (raw file):

				// Again you'd expect that if it's corrupt, it would stay that way, but
				// experimentally, it seems we can get this if the file can't be read because it is (temporarily?) locked.
				// (The text of the message reads, "File could not be read and is possible corrupted", which

typo: possibly
Since you're there, you probably should also capitalize "experimentally"

[JohnThomson]

@JohnThomson reviewed all commit messages and made 1 comment.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on andrew-polk).

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SIL.Windows.Forms/ImageToolbox/PalasoImage.cs line 416 at r1 (raw file):

			int maxRetryAttempts = RetryUtility.kDefaultMaxRetryAttempts,
			int retryDelay = RetryUtility.kDefaultRetryDelay,
			HashSet<Type> retryOnExceptions = null)

I would be inclined to make this additionalRetryOnExceptions, and union it with the three we already know are likely. Is there any reason we would NOT want to include the types we already know can be a problem? So it makes life easier for the client, and also, a client will automatically benefit from any further ones that get added to the library.

[JohnThomson]

One suggestion, but if you don't think it's a good idea,

@JohnThomson reviewed 3 files and made 1 comment.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on andrew-polk).