Add missing dpi versions for ic_mr_button_connected_30_dark

Add hdpi and mdpi versions of ic_mr_button_connected_30_dark,
which are missing when compared to other drawables like
ic_mr_button_disconnected_dark and ic_mr_button_disabled_dark.

Bug: 261878418
Test: Manually using an emulator with hdpi resolution and the routing demo app.
Change-Id: I907c0581d186d5c7b58e092cda645fb1994f0757

mediarouter/mediarouter/src/main/res/drawable-hdpi/ic_mr_button_connected_30_dark.png

diff --git a/mediarouter/mediarouter/src/main/res/drawable-hdpi/ic_mr_button_connected_30_dark.png b/mediarouter/mediarouter/src/main/res/drawable-hdpi/ic_mr_button_connected_30_dark.png
new file mode 100644
index 0000000..fc59d0c
--- /dev/null
+++ b/mediarouter/mediarouter/src/main/res/drawable-hdpi/ic_mr_button_connected_30_dark.png
Binary files differ

mediarouter/mediarouter/src/main/res/drawable-mdpi/ic_mr_button_connected_30_dark.png

diff --git a/mediarouter/mediarouter/src/main/res/drawable-mdpi/ic_mr_button_connected_30_dark.png b/mediarouter/mediarouter/src/main/res/drawable-mdpi/ic_mr_button_connected_30_dark.png
new file mode 100644
index 0000000..f94d783
--- /dev/null
+++ b/mediarouter/mediarouter/src/main/res/drawable-mdpi/ic_mr_button_connected_30_dark.png
Binary files differ