Fix type safety issues reported by Mago static analyzer

[matsuo]

This PR fixes the following issues reported by the latest Mago.

% mago --version
mago 1.42.0
% git log -1 | head -n 1
commit 8aec368db84e19eb8a3701f2c6798fdeb209be3b
% mago --config .mago/mago.toml analyze                    
warning[possibly-false-array-access]: Cannot perform array access on possibly `false` value.
     ┌─ src/Supporting/CommunicationProvider.php:1118:36
     │
1118 │                 && version_compare(curl_version()['version'], '7.71', '>=')) {
     │                                    ^^^^^^^^^^^^^^ The expression might be `false` here.
     │
     = Attempting to read an array index on `false` will result in a runtime error.
     = Help: Ensure the variable holds an array before accessing it, possibly by checking with `is_array()` or `!== false`.

error[docblock-parameter-narrowing]: Docblock type `array<array-key, object>` for parameter `$responseData` drops part of native type `array<array-key, mixed>|object`.
   ┌─ src/Supporting/FileMakerRelation.php:73:33
   │
64 │      * @param array<object> $responseData
   │               ------------- ...but docblock only covers `array<array-key, object>`
   ·
73 │     public function __construct(array|object           $responseData,
   │                                 ^^^^^^^^^^^^ Native type accepts `array<array-key, mixed>|object`, including `object`...
   │
   = Callers can still pass values of the excluded branches.
   = The docblock tells the analyzer those branches are impossible.
   = Narrowing checks can then collapse to `never` in the body.
   = Help: Widen the docblock to `array<array-key, mixed>|object`, or tighten the native type.

warning[possibly-invalid-array-access]: Cannot perform array access on value of type `object`.
    ┌─ src/Supporting/FileMakerRelation.php:274:17
    │
274 │                 $this->data[$num], $dataInfo, ($this->result == "PORTAL") ? "PORTALRECORD" : "RECORD",
    │                 ^^^^^^^^^^^ The expression might be `object` here.
    │
    = Attempting to use a scalar value as an array will result in a runtime error.
    = Help: Ensure the variable holds an array before accessing it.

warning[possibly-invalid-array-access]: Cannot perform array access on value of type `object`.
    ┌─ src/Supporting/FileMakerRelation.php:554:52
    │
554 │                     $value = new FileMakerRelation($this->data[$this->pointer], $dataInfo, $result,
    │                                                    ^^^^^^^^^^^ The expression might be `object` here.
    │
    = Attempting to use a scalar value as an array will result in a runtime error.
    = Help: Ensure the variable holds an array before accessing it.

error: found 4 issues: 1 error(s), 3 warning(s)