media: handle upload on android

Cargo.lock

@@ -3514,6 +3514,7 @@ dependencies = [
  "bitflags 2.9.1",
  "blurhash",
  "chrono",
+ "crossbeam-channel",
  "dirs",
  "eframe",
  "egui",
@@ -3532,6 +3533,7 @@ dependencies = [
  "lightning-invoice",
  "md5",
  "mime_guess",
+ "ndk-context",
  "nostr 0.37.0",
  "nostrdb",
  "nwc",
@@ -3630,6 +3632,8 @@ dependencies = [
  "human_format",
  "image",
  "indexmap 2.9.0",
+ "jni 0.21.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ndk-context",
  "nostrdb",
  "notedeck",
  "notedeck_ui",