omp.json: language segments display_mode="files" -- kill "NO VERSION" leak

Operator 2026-05-09 screenshot showed `pwsh ... C:\WINDOWS\system32
... NO VERSION ... 12:30` in the right block when the bootstrap
fell through to the host pwsh prompt.  "NO VERSION" was one of
the language segments (node / python / go / rust / dotnet) firing
in a directory with no project indicators and dumping its empty
.Full placeholder as literal "NO VERSION".  oh-my-posh's default
`display_mode = "always"` makes language segments render in every
prompt, even outside a project.

Added `"display_mode": "files"` to each of the 5 language segments
so they ONLY render when project indicator files are present in
cwd:

  node     -> package.json, package-lock.json
  python   -> *.py, requirements.txt, pyproject.toml, .python-version
  go       -> go.mod, go.sum, *.go
  rust     -> Cargo.toml, Cargo.lock, *.rs
  dotnet   -> *.csproj, *.sln, *.fsproj, *.vbproj

In every other directory the language segments now stay silent --
the right block collapses cleanly to just OS icon + battery (if
present) + time, no stray "NO VERSION" placeholder.

For the node segment: merged "display_mode" into the existing
properties dict (alongside fetch_package_manager + npm_icon +
yarn_icon).  Other 4 segments had no properties block, so
gained one with just the display_mode key.

Author: Kabuki94

usr/share/mios/oh-my-posh/mios.omp.json

@@ -102,6 +102,7 @@
           "background": "#303030",
           "foreground": "#3C873A",
           "properties": {
+            "display_mode": "files",
             "fetch_package_manager": true,
             "npm_icon": " <#cc3a3a></> ",
             "yarn_icon": " <#348cba></>"
@@ -115,6 +116,7 @@
           "powerline_symbol": "",
           "background": "#306998",
           "foreground": "#FFE873",
+          "properties": { "display_mode": "files" },
           "template": "  {{ if .Error }}{{ .Error }}{{ else }}{{ if .Venv }}{{ .Venv }} {{ end }}{{ .Full }}{{ end }} "
         },
         {
@@ -124,6 +126,7 @@
           "powerline_symbol": "",
           "background": "#E7DFD3",
           "foreground": "#06aad5",
+          "properties": { "display_mode": "files" },
           "template": "  {{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }} "
         },
         {
@@ -133,6 +136,7 @@
           "powerline_symbol": "",
           "background": "#E7DFD3",
           "foreground": "#925837",
+          "properties": { "display_mode": "files" },
           "template": "  {{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }} "
         },
         {
@@ -142,6 +146,7 @@
           "powerline_symbol": "",
           "background": "#0e0e0e",
           "foreground": "#0d6da8",
+          "properties": { "display_mode": "files" },
           "template": "  {{ if .Unsupported }}{{ else }}{{ .Full }}{{ end }} "
         },
         {