fix(elecraft): read the TX meters when the RADIO says it is transmitting

The transmit meters were read on k.tx, which records only that OpsLog
keyed the radio. An operator using the front-panel PTT, a footswitch or
the mic button therefore had a panel that believed the rig was receiving
— and since the power and SWR bars are read only while transmitting,
they were never read at all. IF carries the radio's own transmit bit;
that is what decides now.

The meter probe logs RAW answers rather than parsed numbers, and asks a
wider set (SM, SMH, BG, SW, PO, TQ). A command answering in a shape we
did not expect is the interesting case, and parsing hid it behind the
same dash as a command the radio refused — which is what still stands
between us and a working SWR reading on a K3.

changelog.json

@@ -2,8 +2,12 @@
   {
     "version": "0.26.14",
     "date": "",
-    "en": [],
-    "fr": []
+    "en": [
+      "Elecraft console: the transmit meters are read whenever the RADIO says it is transmitting, not only when OpsLog keyed it. Keying with the front-panel PTT, a footswitch or the mic button left the panel showing a receiver — and the power and SWR bars are read only while transmitting, so for anyone keying by hand they were never read at all."
+    ],
+    "fr": [
+      "Console Elecraft : les mesures d'émission sont lues dès que la RADIO se déclare en émission, et plus seulement quand OpsLog l'a mise en émission. Passer en émission par le PTT de façade, une pédale ou le bouton du micro laissait le panneau croire à une réception — et comme les barres de puissance et de ROS ne sont lues qu'en émission, elles ne l'étaient jamais pour qui manipule à la main."
+    ]
   },
   {
     "version": "0.26.13",