xdp: skip run-lifecycle hooks for XDP-internal runs

[jyothees99]

Runs created by XDP plugins themselves (e.g. xrt::ext::kernel "XDP_KERNEL:{IPUV1CNN}") must not re-enter the XDP run-lifecycle hooks. Enforce this once in the shared XDPPlugin base class so every present and future plugin inherits the skip automatically with no per-plugin code.

• Add public non-virtual XDPPlugin::run{Constructor,Start,Wait}Hook wrappers and protected virtual run*Impl methods (default no-ops). The wrappers prefix-match the kernel name against "XDP_KERNEL" and return on match; otherwise delegate to the *Impl. Plugin _cb.cpp glue continues to call the *Hook wrappers; plugins override the *Impl methods. The wrappers are non-virtual so derived plugins cannot accidentally bypass the filter.
• Single source of truth: the "XDP_KERNEL" prefix constant and the helper live file-local in vp_base_plugin.cpp. The helper is also exposed as xdp::isXdpInternalKernel via vp_base/utility.h for any non-hook XDP code path that needs the same check.
• Convert AieDtracePlugin (the only current consumer): rename runConstructorHook/Start/Wait to runConstructorImpl/StartImpl/ WaitImpl as protected overrides; bodies unchanged. aie_dtrace_cb.cpp is unchanged - aieDtracePluginInstance.runConstructorHook(...) now resolves to the new base-class filtered wrapper and dispatches through the virtual *Impl override.
• core/common/xdp/profile.cpp and profile.h are NOT modified. The no-plugin overhead is unchanged - the existing xrt_core::config::get_aie_dtrace() (and friends) config gate in profile.cpp's dispatchers remains the first and only check on the no-plugin path.