Duplicate Key in Dictionary Literal with Computed Var

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Describe the bug

The duplicated_key_in_dictionary_literal warning is triggered when one static computed var is used repeatedly in a dictionary literal, despite the var being computed and therefore not necessarily the same on every read.

Complete output when running SwiftLint, including the stack trace and command used

$ swiftlint lint
warning: Duplicated Key in Dictionary Literal Violation: Dictionary literals with duplicated keys will crash at runtime (duplicated_key_in_dictionary_literal)

Environment

• SwiftLint version: 0.52.3
• Installation method used: Homebrew
• Paste your configuration file: N/A (default config)

// This triggers a violation:
var currentValue = 0
var generateNewValue: Int {
    let current = currentValue
    currentValue += 1
    return current
}

let testDict = [
    generateNewValue: "",
    generateNewValue: "",
    generateNewValue: "",
]

Start by reproducing the warning with the Swift code in the issue using swiftlint lint, focusing on the duplicated_key_in_dictionary_literal rule. Trace that rule's handling of repeated computed properties and add coverage showing that successive computed reads can produce distinct keys; done means the example no longer receives an incorrect warning while genuinely duplicated keys remain detected.