chore!: loadtest clean-up

[tclemos]

closes https://github.com/0xPolygon/devtools/issues/355

Description

Remove modes:

• call
• function
• random-precompile
• specific-precompile

Flags renamed:

• --lt-address to --loadtest-contract-address
• -b, --byte-count to --store-data-size
• --steady-state-tx-pool-size to --adaptive-target-size
• --send-only to --fire-and-forget (--send-only alias was created to allow backward-compatibility)
• --call-only to --eth-call-only
• --to-random to --random-recipients
• --sending-address-count to sending-accounts-count
• --address-funding-amount to account-funding-amount
• --pre-fund-sending-addresses to pre-fund-sending-accounts
• --sending-addresses-file to sending-accounts-file

Flags removed:

• -i, --iterations
• --force-contract-deploy

Features affected:

• If a mode requires an SC to work, the SC will be deployed automatically without requiring a flag to force it, or it will skip the deploy in case the address is provided via a flag. This applies to the modes: Increment, Random, Store, ERC20, and ERC721.

[Copilot]

Pull Request Overview

This PR performs a significant cleanup of the loadtest command by removing deprecated modes and renaming flags for better clarity and consistency.

• Removes 4 deprecated loadtest modes: call, function, random-precompile, and specific-precompile
• Renames multiple flags for improved clarity (e.g., --lt-address to --loadtest-contract-address)
• Simplifies contract deployment logic by automatically deploying smart contracts when required by specific modes

Reviewed Changes

Copilot reviewed 10 out of 12 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
doc/polycli_loadtest_uniswapv3.md	Updates flag documentation with renamed flags and removes deprecated options
doc/polycli_loadtest.md	Updates comprehensive loadtest documentation removing deprecated modes and flags
doc/load-testing-guide.md	Updates multi-account configuration documentation with renamed flags
cmd/monitorv2/renderer/tview_renderer.go	Minor formatting cleanup (removes empty line)
cmd/loadtest/loadtestmode_string.go	Updates generated string constants for removed loadtest modes
cmd/loadtest/loadtestUsage.md	Updates usage documentation removing deprecated examples and modes
cmd/loadtest/loadtest.go	Main implementation changes removing mode handlers and updating flag references
cmd/loadtest/app.go	Updates flag definitions and variable names for renamed flags
cmd/loadtest/account.go	Updates log messages to use "account" instead of "address" terminology
cmd/flag_loader/flag_loader.go	Minor import reordering

[ARR552]

LGTM

[minhd-vu]

some nits: your choice if you want to address them