Tracking issue: Reworking DynamicValue wrt effect text generation

Original discussion #12595

TODO:

- [ ] Get go-ahead on small PR implementing backwards-compatible changes with a few pertinent examples (#12596)
- [ ] Implement `getMessage(EffectPhrasing phrasing)` and possibly `getValueHint()` for all implementations of `DynamicValue`, merging in stages, Fixing any oracle text errors introduced
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- [ ] Add MultipliedValue handling to `getBoostText`
- [ ] Remove `getBoostCountAsStrLegacy`
- [ ] Sweep for any `DynamicValue` classes that dont need to be classes (i.e. owning multipliers)
- [ ] Sweep for `DynamicValue` implementations that can use decorators that were missed by the above due to not being classes (i.e. `MwonvuliOozePTValue`)
- [ ] Replace all Hint instances that can be replaced with a call to appropriate getValueHint()
- [ ] Sweep for effects with `DynamicValue` arguments, merging in stages
- [ ] Remove any removable uses of `setText()` for all effects using `DynamicValue`
- [ ] Remove `toString` in `DynamicValue`
- [ ] Remove `getMessage()` (no arguments) in `DynamicValue`
- [ ] Remove default `getMessage(ValuePhrasing phrasing)` in `DynamicValue`
- [ ] Remove `LEGACY` enum in `ValuePhrasing`
- [ ] Convert `getValueHint()` to `getHint()' [(? see discussion)](https://github.com/magefree/mage/pull/12596#discussion_r1739939902)
- [ ] Add option for "it" instead of "this" in `CountersSourceCount`
- [ ] Fix any preexisting, newly trivial oracle text errors