docs: Improvements to topics on account functions.

[stoobie]

Description of the Changes

• Clarify all __validate*__ functions
• Add account function reference
• Clarify limitations on __validate*__ functions

This PR is a cleanup of #945, which at some point introduced a lot of unwanted obsolete reversions.

Currently the section Validate limitations doesn't actually list the limitations. This PR fixes that.

PR Preview URL

Starknet’s account interface Account interface function reference

Check List

• [x] Changes have been done against main branch, and PR does not conflict
• [x] PR title follows the convention: <docs/feat/fix/chore>(optional scope): <description>, e.g: fix: minor typos in code

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This change is 

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[ArniStarkware]

components/Starknet/modules/architecture_and_concepts/pages/Accounts/account_functions.adoc line 23 at r1 (raw file):

You can only use the `+__validate_deploy__+` function in an account contract to validate the `DEPLOY_ACCOUNT` transaction for that same contract.
====
| `+__constructor__+` | If an account does not define a `+__constructor__+` function, the sequencer uses a default `+__constructor__+` function, which is empty.

no _.

Suggestion:

constructor

[ArniStarkware]

components/Starknet/modules/architecture_and_concepts/pages/Accounts/account_functions.adoc line 23 at r1 (raw file):

You can only use the `+__validate_deploy__+` function in an account contract to validate the `DEPLOY_ACCOUNT` transaction for that same contract.
====
| `+__constructor__+` | If an account does not define a `+__constructor__+` function, the sequencer uses a default `+__constructor__+` function, which is empty.

Suggestion:

| `+constructor+` | If an account does not define a `+constructor+` function, the sequencer uses a default `+constructor+` function, which is empty.

[ArniStarkware]

components/Starknet/modules/architecture_and_concepts/pages/Accounts/account_functions.adoc line 23 at r1 (raw file):

You can only use the `+__validate_deploy__+` function in an account contract to validate the `DEPLOY_ACCOUNT` transaction for that same contract.
====
| `+__constructor__+` | If an account does not define a `+__constructor__+` function, the sequencer uses a default `+__constructor__+` function, which is empty.

About the constructor - I like the fact it is on this page. If you can say that any contract has a constructor. As stated here, it is defined explicitly or used as the default constructor.

Code quote:

| `+__constructor__+` | If an account does not define a `+__constructor__+` function, the sequencer uses a default `+__constructor__+` function, which is empty.

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[ArniStarkware]

components/Starknet/modules/architecture_and_concepts/pages/Accounts/account_functions.adoc line 196 at r1 (raw file):

Previously, ArniStarkware (Arnon Hod) wrote…

Is this sentence + example readable? Is it clear that the `__validate_deploy__`'s parameters should be: `self`, `class_hash`, `contract_address_salt` + "the non-self arguments of the constructor"? Is it written somewhere else?

It is non-blocking in my opinion.

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