[rb] Expand RBS typing support by replacing untypes with precise typing

[aguspe]

Description

This PR replaces the untyped types for the precise types in all of the RBS signature files

Motivation and Context

Based on #10943 I created the following PRs to add RBS-type support to the ruby selenium library:

On #12844 I started adding support for RBS and I added the steep file configuration

On #13192 I extended the classes supported on RBS and updated the logger file

On #13234 I added RBS files for the entire selenium library,
however several of the autogenerated files only have the type defined as untyped instead of the precise type

Example

Before:

  def atom_script: (untyped) -> untyped

  private

  def read_atom: (Symbol function) -> String

  def execute_atom: (Symbol function_name, *untyped arguments) -> untyped

After:

  def atom_script: (Symbol) -> String

  private

  def read_atom: (Symbol function) -> String

  def execute_atom: (Symbol function_name, [Element | String | Symbol] arguments) -> [Element | Integer | Float | bool | nil | String | Array[untyped]]

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.