fix: get correct env from npm config

`npm config set VAR VAL` will inject `npm_config_var=val` environment
variable. This commit will solve this issue

Closes: #24556

cli/lib/util.js

@@ -533,6 +533,7 @@ const util = {
     la(is.unemptyString(varName), 'expected environment variable name, not', varName)
 
     const configVarName = `npm_config_${varName}`
+    const configVarNameLower = configVarName.toLowerCase()
     const packageConfigVarName = `npm_package_config_${varName}`
 
     let result
@@ -545,6 +546,10 @@ const util = {
       debug(`Using ${varName} from npm config`)
 
       result = process.env[configVarName]
+    } else if (process.env.hasOwnProperty(configVarNameLower)) {
+      debug(`Using ${varName.toLowerCase()} from npm config`)
+
+      result = process.env[configVarNameLower]
     } else if (process.env.hasOwnProperty(packageConfigVarName)) {
       debug(`Using ${varName} from package.json config`)
 

cli/test/lib/util_spec.js

@@ -543,6 +543,11 @@ describe('util', () => {
       expect(util.getEnv('CYPRESS_FOO')).to.eql('')
     })
 
+    it('npm config set should work', () => {
+      process.env.npm_config_cypress_foo_foo = 'bazz'
+      expect(util.getEnv('CYPRESS_FOO_FOO')).to.eql('bazz')
+    })
+
     it('throws on non-string name', () => {
       expect(() => {
         util.getEnv()