typing fixes

tabby-ssh/src/components/hostKeyPromptModal.component.pug

@@ -10,7 +10,7 @@
         .d-flex.align-items-center
             label(translate) Last known host key fingerprint
             .badge.text-bg-danger.ms-auto {{ selector.type }}
-        code {{knownHost.digest}}
+        code {{knownHost?.digest}}
 
     .mb-3
         .d-flex.align-items-center

tabby-ssh/src/components/sshProfileSettings.component.pug

@@ -195,6 +195,7 @@ ul.nav-tabs(ngbNav, #nav='ngbNav')
         a(ngbNavLink, translate) Ports
         ng-template(ngbNavContent)
             ssh-port-forwarding-config(
+                *ngIf='profile.options.forwardedPorts',
                 [model]='profile.options.forwardedPorts',
                 (forwardAdded)='onForwardAdded($event)',
                 (forwardRemoved)='onForwardRemoved($event)'

tabby-ssh/src/components/sshTab.component.pug

@@ -38,10 +38,10 @@ sftp-panel.bg-dark(
     @panelSlide,
     [@.disabled]='!config.store.accessibility.animations',
     [(path)]='sftpPath',
-    *ngIf='sftpPanelVisible',
+    *ngIf='sftpPanelVisible && sshSession',
     (click)='$event.stopPropagation()',
-    [session]='sshSession',
-    [cwdDetectionAvailable]='session?.supportsWorkingDirectory()',
+    [session]='sshSession!',
+    [cwdDetectionAvailable]='session?.supportsWorkingDirectory() ?? false',
     (closed)='sftpPanelVisible = false'
 )
 
@@ -49,5 +49,5 @@ keyboard-interactive-auth-panel.bg-dark(
     *ngIf='activeKIPrompt',
     [prompt]='activeKIPrompt',
     (click)='$event.stopPropagation()',
-    (done)='activeKIPrompt = null; frontend.focus()'
+    (done)='activeKIPrompt = null; frontend?.focus()'
 )