fix: make properties of configurables optional in typegen

[Torres-ssf]

• Closes Make configurable properties optional in typegen outputs #2790

Summary

This PR updates the typegen template to ensure that all configurable properties are optional.

Checklist

• I added — tests to prove my changes
• I updated — all the necessary docs
• I reviewed — the entire PR myself, using the GitHub UI
• I described — all breaking changes and the Migration Guide

[maschad]

Looks good, left two comments

[maschad]

Nice

[nedsalk]

This PR currently only solves the problem for predicates, but #2790 is a general issue that includes scripts and contracts as well, so they should be covered in this PR also.

[github-actions]

Coverage Report:

Lines	Branches	Functions	Statements
79.4%(+0.04%)	71.53%(-0.12%)	77.32%(+0.02%)	79.53%(+0.04%)

Changed Files:

Ok	File (✨=New File)	Lines	Branches	Functions	Statements
🔴	packages/account/src/account.ts	82.31% (+1.16%)	65.07% (+1.14%)	82.35% (+0.54%)	82% (+1.15%)
🔴	packages/account/src/providers/provider.ts	68.02% (-0.82%)	62.63% (-1.19%)	73.49% (-0.31%)	67.98% (-0.81%)
🔴	packages/account/src/test-utils/launchNode.ts	98.27% (+0.01%)	85.24% (+0.5%)	100% (+0%)	98.36% (+0.02%)
🔴	packages/contract/src/contract-factory.ts	58.33% (-0.29%)	46.42% (+0.27%)	54.54% (+0%)	58.33% (-0.29%)
🔴	packages/contract/src/util.ts	93.75% (+0.42%)	0% (+0%)	66.66% (+0%)	88.88% (+0.65%)
🔴	packages/create-fuels/src/cli.ts	85.5% (+0.21%)	37.5% (-2.5%)	100% (+0%)	85.5% (+0.21%)