fix(focas): decode all four bytes of an axis/spindle name record, up to the first NUL

ReadNameRecord read only the first 2 bytes of each 4-byte 0x0089/0x008A record,
so the real 31i-B's paired axes 'AA6'/'AA7' (live capture ref-axisname-0x0089.bin)
both decoded as 'AA' -- the 'Makino with two AA axes' that #548 then had to
disambiguate as AA_1/AA_2. The name is now the record's ASCII up to its FIRST
NUL (not trailing-NUL trimming), so buffer residue such as Z-34184's spindle
record 53 31 00 4e ('S1' + an 'N' left from an earlier 'CNC') is discarded.

Client-visible: on such a machine Axes/AA_1 and Axes/AA_2 become Axes/AA6 and
Axes/AA7 (the old names were a decode artefact). #548's disambiguation stays as
the guard for genuinely duplicate names.

Ported from the sister ignitionoee FOCAS driver (Focas.Wire-001, Focas.Wire-022
/ v0.18.1).

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/Wire/FocasWireClient.cs

@@ -1114,7 +1114,17 @@ public sealed class FocasWireClient : IAsyncDisposable, IDisposable
         return alarms;
     }
 
-    private static IReadOnlyList<T> ReadNameRecords<T>(byte[] payload, short maxCount, Func<short, string, T> factory)
+    /// <summary>
+    ///     Decode an axis-name (0x0089) or spindle-name (0x008A) payload: an array of 4-byte records,
+    ///     each named by <see cref="FocasWireProtocol.ReadNameRecord"/>. Blank records are skipped but
+    ///     keep their slot's 1-based index.
+    /// </summary>
+    /// <typeparam name="T">The record type the factory builds.</typeparam>
+    /// <param name="payload">The response-block payload.</param>
+    /// <param name="maxCount">Maximum number of records to inspect.</param>
+    /// <param name="factory">Builds one record from its 1-based index and name.</param>
+    /// <returns>The non-blank records, in wire order.</returns>
+    internal static IReadOnlyList<T> ReadNameRecords<T>(byte[] payload, short maxCount, Func<short, string, T> factory)
     {
         var names = new List<T>();
         for (var offset = 0; offset + 4 <= payload.Length && offset / 4 < maxCount; offset += 4)