False positive in test_case_accessibility for variables used in init

[laralove143]

New Issue Checklist

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

Describe the bug

When defining variables with let or var inside the init block, test_case_accessibility warning is raised, when it shouldn't be. Maybe they're falsely being treated as properties?

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

Command output:

ProjectTests % swiftlint BaseTestCase.swift
Linting Swift files at paths BaseTestCase.swift
Linting 'BaseTestCase.swift' (1/1)
.../Project/Tests/ProjectTests/BaseTestCase.swift:6:9: warning: Test Case Accessibility Violation: Test cases should only contain private non-test members (test_case_accessibility)
.../Project/Tests/ProjectTests/BaseTestCase.swift:7:9: warning: Test Case Accessibility Violation: Test cases should only contain private non-test members (test_case_accessibility)
Done linting! Found 2 violations, 0 serious in 1 file.

Environment

• SwiftLint version: 0.52.4
• Installation method used: Homebrew
• Paste your configuration file:

opt_in_rules:
  - test_case_accessibility

• Are you using nested configurations: No
• Which Xcode version are you using: Xcode 14.3.1 Build version 14E300c
• Do you have a sample that shows the issue? Run echo "[string here]" | swiftlint lint --no-cache --use-stdin --enable-all-rules
  to quickly test if your example is really demonstrating the issue. If your example is more
  complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules.

import XCTest

class BaseTestCase: XCTestCase {
    override init() {
        super.init()
        let foo = 1 // test_case_accessibility
        var bar = 2 // test_case_accessibility
    }
}

[gibachan]

I would like to try this issue 🙋‍♂️