Migrate some duplicate binding tests to traverse (#9532)

* Migrate try-catch duplicate error

* Remove exception for functions and let in the same scope

* Migrate duplicate bindings tests to traverse

* Add test for subscope and let/const

* Add more test cases

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-classes/input.js

@@ -1,5 +0,0 @@
-const MULTIPLIER = 5;
-
-class MULTIPLIER {
-
-}

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-classes/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Duplicate declaration \"MULTIPLIER\""
-}

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-declaration/input.js

@@ -1,3 +0,0 @@
-const MULTIPLIER = 5;
-
-var MULTIPLIER = "overwrite";

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-declaration/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Duplicate declaration \"MULTIPLIER\""
-}

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-functions/input.js

@@ -1,5 +0,0 @@
-const MULTIPLIER = 5;
-
-function MULTIPLIER() {
-
-}

packages/babel-plugin-transform-block-scoping/test/fixtures/const-violations/no-functions/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Duplicate declaration \"MULTIPLIER\""
-}

packages/babel-plugin-transform-block-scoping/test/fixtures/general/issue-5979/input.js

@@ -1 +0,0 @@
-try {} catch (a) { let a }

packages/babel-plugin-transform-block-scoping/test/fixtures/general/issue-5979/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Duplicate declaration \"a\""
-}