Add network mode option for Kinetic Fusillade effective attack rate

[hackoh]

Description of the problem being solved:

Kinetic Fusillade's max effective attack rate depends on the network mode: in-game testing showed that Lockstep rounds the projectile fire delay up to server ticks while Predictive does not (see #9362 and #9452, where this difference was discovered and is already noted in a code comment and shown in the Calcs breakdown). However:

• Only the Lockstep value is actually used for DPS (via dpsMultiplier scaling), so players on Predictive see a pessimistic DPS and wrong breakpoints.
• The sidebar Attack Rate always shows the raw attack speed, even when a large part of it is wasted, which is misleading when comparing gear or tree changes.
• The cap is not applied to the "1 Projectile" skill part at all.

This PR adds a "Network mode" (Lockstep / Predictive) option to the Configuration tab, shown only when Kinetic Fusillade or Kinetic Fusillade of Detonation is socketed, defaulting to Lockstep (current behaviour).

Implementation notes:

• The cap is now applied by clamping output.Speed to the selected mode's max effective rate. For the "All Projectiles" part this is mathematically equivalent to the previous dpsMultiplier scaling (avg × APS × count × cap/APS ≡ avg × min(APS, cap) × count), but it additionally makes the sidebar Attack Rate, ailment calcs and the "1 Projectile" part consistent with the effective rate.
• The previous dpsMultiplier efficiency scaling is removed, since keeping both would double-count the penalty.
• The Calcs breakdown still shows both Lockstep and Predictive numbers, and now also displays which mode is selected.
• src/Data/Skills/act_int.lua and src/Export/Skills/act_int.txt are kept in sync.

Steps taken to verify a working solution:

• Verified that Total DPS in Lockstep mode is bit-identical before/after this change on a 12-projectile ballista build (confirms the equivalence of the two capping approaches).
• Verified that switching to Predictive removes the server-tick rounding on the same build (effective APS cap 7.58 → 8.34, above the build's 8.29 raw APS, Total DPS +9.4%).
• Verified that attack speed changes (e.g. toggling Haste) now propagate to DPS proportionally while below the cap, and are correctly treated as wasted above it.
• Verified the Configuration option only appears when a Kinetic Fusillade gem is socketed.

Link to a build that showcases this PR:

https://pobb.in/4mxi3Ncmborf

Before screenshot:

Sidebar shows the raw attack rate (8.29) even though most of it is wasted:

Breakdown shows both modes but there is no way to choose which one applies:

After screenshot:

Lockstep (default) — Total DPS is identical to before; the sidebar Attack Rate now shows the effective rate:

Predictive — server-tick rounding removed (+9.4% DPS on this build):

Breakdown now shows the selected mode: