fix(embedded-captions): support heroless themes (#3632)

Co-authored-by: heygengenesis[bot] <262951085+heygengenesis[bot]@users.noreply.github.com>
Co-authored-by: miguel.sierra <229591595+miguel-heygen@users.noreply.github.com>

Author: heygengenesis[bot]

skills-manifest.json

@@ -2,8 +2,8 @@
   "source": "heygen-com/hyperframes",
   "skills": {
     "embedded-captions": {
-      "hash": "84d986fddfc717a1",
-      "files": 139
+      "hash": "1f29e0f6c77da4f5",
+      "files": 142
     },
     "faceless-explainer": {
       "hash": "a7080101c30ceeb7",

skills/embedded-captions/scripts/fixtures/heroless/theme.json

@@ -0,0 +1,11 @@
+{
+  "width": 1280,
+  "height": 720,
+  "fps": 24,
+  "duration": 6,
+  "lines": [
+    ["quiet", "captions"],
+    ["continue", "without"],
+    ["a", "hero"]
+  ]
+}

skills/embedded-captions/scripts/fixtures/heroless/transcript.json

@@ -0,0 +1,10 @@
+{
+  "words": [
+    { "text": "quiet", "start": 0.5, "end": 0.9 },
+    { "text": "captions", "start": 1.2, "end": 1.8 },
+    { "text": "continue", "start": 2.1, "end": 2.7 },
+    { "text": "without", "start": 3.0, "end": 3.4 },
+    { "text": "a", "start": 3.7, "end": 3.8 },
+    { "text": "hero", "start": 4.1, "end": 4.45 }
+  ]
+}