fix(compose): default to quoting below, and focus the body on a reply

The previous commit fixed the cursor within each quote_position branch and
the user still saw the old layout, because the branches were already right:
what was wrong was the DEFAULT. quote_position shipped as `above`, and the
layout asked for is exactly what `below` already produced, a blank line at
the top with the quote underneath.

So the default flips, along with the fallback for a malformed value and the
warning naming it. Nothing needs an Upgrading note: compose has not been
released, so no config in the wild sets this.

Focus goes to the body whenever To: is already filled, which a Reply and a
Forward always are. The form's first widget took it otherwise, so the user
had to click into the editor before typing. A New message keeps the default,
since an empty To: is genuinely the first thing to fill in.

The focus test asserts on the window's focusWidget() rather than on
QWidget::hasFocus(): an unshown window is never active, so hasFocus() reads
false whatever the code does and would fail against a correct fix. Both
directions are mutation-checked, since focusing unconditionally passes the
reply case while breaking the new-message one.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/config.cpp b/src/config.cpp
index c6bedd2..b148102 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -531,7 +531,7 @@ void Config::load(const QString &path)
     // other enum-ish key in this file (sync_on_exit, language, date_format)
     // rather than being the one silent exception.
     const QString quotePosition =
-        settings.value(QStringLiteral("quote_position"), QStringLiteral("above"))
+        settings.value(QStringLiteral("quote_position"), QStringLiteral("below"))
             .toString().trimmed();
     if (quotePosition.compare(QStringLiteral("above"), Qt::CaseInsensitive) == 0) {
         m_compose.quotePosition = ComposeSettings::QuotePosition::Above;
@@ -539,7 +539,7 @@ void Config::load(const QString &path)
         m_compose.quotePosition = ComposeSettings::QuotePosition::Below;
     } else {
         addProblem(tr("[compose] quote_position '%1' is not recognised; "
-                      "expected above or below. Using above.")
+                      "expected above or below. Using below.")
                        .arg(quotePosition));
     }