tls: use validateFunction for options.SNICallback

[deokjinkim]

If user uses invalid type for options.SNICallback in TLSSocket(), it's not internal issue of Node.js. So validateFunction() is more proper than assert().

Below is shown if we run newly added test case without this PR.

=== release test-tls-snicallback-error ===                   
Path: parallel/test-tls-snicallback-error
node:assert:635
      throw err;
      ^

AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:
+ actual - expected

  Comparison {
+   code: 'ERR_INTERNAL_ASSERTION',
+   name: 'Error'
-   code: 'ERR_INVALID_ARG_TYPE',
-   name: 'TypeError'
  }
    at Object.<anonymous> (/home/deokjinkim/oss/node2/test/parallel/test-tls-snicallback-error.js:18:10)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
    at Module.load (node:internal/modules/cjs/loader:1207:32)
    at Module._load (node:internal/modules/cjs/loader:1023:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:135:12)
    at node:internal/main/run_main_module:28:49 {
  generatedMessage: true,
  code: 'ERR_ASSERTION',
  actual: Error [ERR_INTERNAL_ASSERTION]: This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
  Please open an issue with this stack trace at https://github.com/nodejs/node/issues
  
      at assert (node:internal/assert:14:11)
      at TLSSocket._init (node:_tls_wrap:912:5)
      at new TLSSocket (node:_tls_wrap:591:8)
      at assert.throws.code (/home/deokjinkim/oss/node2/test/parallel/test-tls-snicallback-error.js:19:5)
      at getActual (node:assert:756:5)
      at Function.throws (node:assert:902:24)
      at Object.<anonymous> (/home/deokjinkim/oss/node2/test/parallel/test-tls-snicallback-error.js:18:10)
      at Module._compile (node:internal/modules/cjs/loader:1376:14)
      at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
      at Module.load (node:internal/modules/cjs/loader:1207:32) {
    code: 'ERR_INTERNAL_ASSERTION'
  },
  expected: { code: 'ERR_INVALID_ARG_TYPE', name: 'TypeError' },
  operator: 'throws'
}

Node.js v22.0.0-pre
Command: out/Release/node /home/deokjinkim/oss/node2/test/parallel/test-tls-snicallback-error.js

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/55433/

[nodejs-github-bot]

Landed in 609cd7f