feat(balance): dissoluted devourer buff scales more slowly, cut max bashing bonus in half

[chaosvolt]

Why should this PR be merged?

This implements some belated adjustments to how the dissoluted devourer's effect scales. In particular make it scale up more slowly so that it takes more HP of absorbed zombies to max out the effects, but also make the recently-ish-restored bash bonuses less massive.

What does this PR do?

1. Increased max intensity from 480 to 1000.
2. Reduced the numbers of all bonuses so they hit their original max values at this new max, which combined with step one make them essentially scale a bit more than twice as slowly. Size mod scaling additionally was shifted just enough to be a lil more 100% sure it won't be an even +3 bonus at max intensity, since that's one size more than exists in the game due to starting off as a medium creature.
3. On top of that, bash_mod given an additional cut in half so that damage bonus at max intensity is +20 instead of +40, noting that this is a fixed bonus that gets tacked onto its original damage roll.
4. Comments in the effect JSON updated accordingly.

Steps to test and verify this PR

1. Checked affected file for syntax and lint errors.
2. Did math. :<
3. Load-tested and spawned in a dissoluted devourer.
4. Fed it tough zombies, confirmed intensity can go past 480 but maxes out at 1000. Also confirmed that it hits huge in the late 600s as expected, and doesn't implode the game if examined at max intensity.

Checklist

Mandatory

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax like closes #1234 in Summary of the PR so it can be closed automatically.
• I've committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

[RoyalFox2140]

I can't complain.