[BUG] Depending on definition pattern of variable in variables section it is shown as used or not used

[Odehnal]

Describe the bug
Depending on the way a variable is define in *** Variables *** section it is shown as used or not used
${WAIT_TIMEOUT}= 10 seconds # Usage of Variable is not found
${WAIT_TIMEOUT} 10 seconds # Usage of Variable is found

Steps To Reproduce
Steps to reproduce the behavior:
Use of example of RobotCode documentation https://robotcode.io/04_tip_and_tricks/02_why_variable_not_found#explicit-variable-definitions
-> Pattern: Resource files with shared variables
and add "=" in Variable definition

*** Settings ***
Resource    resources/common_variables.resource

*** Test Cases ***
Use Shared Variables
    Log    Timeout is ${WAIT_TIMEOUT}
    Log    Supported browsers: @{SUPPORTED_BROWSERS}

# resources/common_variables.resource
*** Variables ***
${WAIT_TIMEOUT}=         10 seconds

# Complex data structures
@{SUPPORTED_BROWSERS}   chrome    firefox    edge

Expected behavior
Usage of Variable is found independently of using ${varname} or ${varname}=

Screenshots/ Videos

Versus

Logs
Copy the messages from VSCode "Output" view for RobotCode and RobotCode Language Server for the specific folder/workspace.

Desktop (please complete the following information):

• VSC: Version: 1.107.0 (user setup)

• OS: Windows_NT x64 10.0.26100

• RobotCode Version 2.1.0

• Python Version 3.13.7

• RobotFramework Version 6.1.1

• robocop 6.13.0